kittu12 Saysin an examination 45% students failed in hindi and 32% failed in History,20% failed in both the subjects.if the number of students who passed the examination was 880,how many students appeared in the examination consisted only of these two subjects..
Either I am mistaken(about my lvl of prep) or the question is slightly mistyped...u sure no. of students passed=880?? is it not 860?
u see solving the question using venn diagram...c the figure attached..
At IIM, Bangalore, 60% of the students are boys and the rest are girls. Further 15% of the boys and 7.5% of the girls are getting a fee waiver. If the number of those getting a fee waiver is 90,find the total number of students getting 50% concession if it is given that 50% of those not getting a fee waiver are eligible to get half fee concession..
A machine depreciates in value each year at the rate of 10% of its previous value.however every second year there is some maintenance work so that in that particular year depreciation is only 5% of its previous value.if at the end of the fourth year,the value of the machine stands at rs.1,46,205 then find the value of machine at the start of the first year
pls explain in detail with steps..
kittu12 Saysin an examination 45% students failed in hindi and 32% failed in History,20% failed in both the subjects.if the number of students who passed the examination was 880,how many students appeared in the examination consisted only of these two subjects..
At IIM, Bangalore, 60% of the students are boys and the rest are girls. Further 15% of the boys and 7.5% of the girls are getting a fee waiver. If the number of those getting a fee waiver is 90,find the total number of students getting 50% concession if it is given that 50% of those not getting a fee waiver are eligible to get half fee concession..
A machine depreciates in value each year at the rate of 10% of its previous value.however every second year there is some maintenance work so that in that particular year depreciation is only 5% of its previous value.if at the end of the fourth year,the value of the machine stands at rs.1,46,205 then find the value of machine at the start of the first year
pls explain in detail with steps..
after receiving 2 successive raises, Hursh's salary became equal to 15/8 times of his initial salary.byhow much perecnt was the salary raised the first time if the second raise was twice as high (in percent) as the first? a) 15% b) 20% c) 25% d) 30%
pls explain detail
after receiving 2 successive raises, Hursh's salary became equal to 15/8 times of his initial salary.byhow much perecnt was the salary raised the first time if the second raise was twice as high (in percent) as the first? a) 15% b) 20% c) 25% d) 30%
pls explain detail
after receiving 2 successive raises, Hursh's salary became equal to 15/8 times of his initial salary.byhow much perecnt was the salary raised the first time if the second raise was twice as high (in percent) as the first? a) 15% b) 20% c) 25% d) 30%
pls explain detail
Prema goes to a shop to buy sofa costing Rs.13080. the rate of sales tax is 9%. She tells the shopkeeper to reduce the price of sofa so that she has to pay Rs.13080 inclusive of taxes. Find the %age reduction needed in price of sofa to satisfy her requirement?
pls explain with steps
after receiving 2 successive raises, Hursh's salary became equal to 15/8 times of his initial salary.byhow much perecnt was the salary raised the first time if the second raise was twice as high (in percent) as the first? a) 15% b) 20% c) 25% d) 30%
pls explain detail
Prema goes to a shop to buy sofa costing Rs.13080. the rate of sales tax is 9%. She tells the shopkeeper to reduce the price of sofa so that she has to pay Rs.13080 inclusive of taxes. Find the %age reduction needed in price of sofa to satisfy her requirement?
pls explain with steps
Prema goes to a shop to buy sofa costing Rs.13080. the rate of sales tax is 9%. She tells the shopkeeper to reduce the price of sofa so that she has to pay Rs.13080 inclusive of taxes. Find the %age reduction needed in price of sofa to satisfy her requirement?
pls explain with steps
Never Back Down.
"in an examination 45% students failed in hindi and 32% failed in History,20% failed in both the subjects.if the number of students who passed the examination was 880,how many students appeared in the examination consisted only of these two subjects.."
Answer : Your question can be solved using Venn-Diagram.
Consider the venn diagram for Hindi and History... the parameters being
a=failed only in hindi
b=failed in both
c=failed in history
Let total no of students be x
So as per the question
a+b=0.45x
b+c=0.32x
and b = 0.2x
so a=0.25x
b=0.20x
c=0.12x
So people who have failed in atleast one subject = 0.57x
So people who passed in both the subjects = 0.43x ----> (1)
and people who passed in atleast one subject = a + c = 0.37x (since a and c dentoes people who have failed only in "one" subject) ----> (2)
so (1) + (2) = 0.8x = total no of people who have passed the examination.
So 0.8x = 880
ie x = 1100 = total no of students...
Sorry for keeping it long 😃
x(1.09)=13080
x=13080/1.09 = 12000
% reduction = 1080/13080.100= 8.25%
........................
the population of new Foundland increases with a uniform rate of 8% per annum,but due to immigration,there is a futhur increase of population by 1%(however this 1% increase in population after the 8% increase and not on the previous years population).find what will be the % increase in population after 2 years..
pls explain the steps too
kittu12 Sayshere what is considered as x dude?the whole cost is 13080,can u just tell me what is x and can u give me some more explanation,thanks in advance
the population of new Foundland increases with a uniform rate of 8% per annum,but due to immigration,there is a futhur increase of population by 1%(however this 1% increase in population after the 8% increase and not on the previous years population).find what will be the % increase in population after 2 years..
pls explain the steps too
10% of mexico's population migrated to South Asia, 10% of the remaining migrated to America and 10 % of the rest migrated to Australia. If the female population , which ws left in mexico, remained only 3,64,500, find the population of mexico b4 migratn and its effects if it is givn that b4 the migratn female population ws half the male population and this ratio did nt change after the migration.options-
1.10,00,000 2. 12,00,000 3. 15,00,000 4. 16,00,000 5. 12,50,000
pls explain in detial
10% of mexico's population migrated to South Asia, 10% of the remaining migrated to America and 10 % of the rest migrated to Australia. If the female population , which ws left in mexico, remained only 3,64,500, find the population of mexico b4 migratn and its effects if it is givn that b4 the migratn female population ws half the male population and this ratio did nt change after the migration.options-
1.10,00,000 2. 12,00,000 3. 15,00,000 4. 16,00,000 5. 12,50,000
pls explain in detial
In a town consisting of three localities A, B and C, the population of the three localities A, B and C are in the ratio 9:8:3. In locality A, 80% of the people are literate, in locality B, 30% of the people are illiterate. If 90% people in locality C are literate, find the percentage literacy in that town. (a) 61.5% (b) 78% (c) 75% (d) None of these
i worked in this way:
let the population be x
9x+8x+3x=100
x=5
A=45,B=40,C=15
then A=80/100*45=36
B=30/100*40=12
C=90/100*15=13.5 approx 13
39/100*100=39%
can u please tell me whether i am right??coz the question paper doesnt contain the answer..thanx in advance