CGL 2012 Tier 2 Preparations and Results

Staff Selection Commission (SSC) SSC - CGL
4311

@mickym said: Gotta go sumwhr guys catch ya later....................Meanwhile solve this
the average marks of all students who passed in a test is 65% and those who failed is 30%. if the average of all students is 50% then find what % of students passed the test?
Let total no students who passed =p
failed=f

(p*0.65 + f*0.3)/(p+f ) =Avg of all = 0.5

sole n get p/f=4/3

now u to just find : p/(p+f) *100
4312
@Brooklyn said:
@mickym :sirji apka posted q hai usko btake jao hw to do :
A packet of toffees is distributed in a class. A child who receives one-eighth of the total number of toffees gets five times the average number of toffees received by the remaining children in the class. What is the strength of the class?
Let class strength be x and total toffees be t.
t/8 = 5 (7t/8/(x-1))
1/8 = 35/(8x-8),
solving x=36
4313
The magnitude of profit is one third of the discount.
If the discount offered is 37.5% what is the profit percentage??

4314
@mickym said:
The magnitude of profit is one third of the discount.
If the discount offered is 37.5% what is the profit percentage??
is it 12.5 ???
4315
@mickym what i did was let total marks be 100 and total students be 100...as its a percentage question.....
and let pass students be x...den pass students marks=65x.....and fail students marks=30(100-x).....(65x+3000-30x)/100=50.....solve it....:P
4316
@mbajamesbond said:
Let class strength be x and total toffees be t.
t/8 = 5 (7t/8/(x-1))
1/8 = 35/(8x-8),
solving x=36
my style of solving thnx :mg:
4317
@Brooklyn said:
is it 12.5 ???
4318
@mickym 20 percent??
4319
@alkoszzz said:
@mickym 20 percent??
4320
@alkoszzz said:
@mickym 20 percent??
4321

is it 25 %

4322
@alkoszzz
@Brooklyn

25% is the ans
4323
@mickym solution??? :(
4324
@mickym solution ???
4325
@mickym solution??? :(
4326
@amit_gagrani said: is it 25 %
bhai solution to dede....
4328

let mp is 100.

dis will be 37.5 .

hence sp will be 62.5

now cp =sp-profit

but profit = dis/3=37.5/3=12.5

so cp will be 62.5-12.5=50

profit % =12.5/50=25%

4329
@truly.gone said:
@Brooklyn a man bought two basketful of mangoes for rs 19.80 and rs 34.65 . cost of each mango is not less than 24 paise and not greater than 36 paise. find the total number of mangoes bought by the man? bhai i dont have the answer....pls anwer with explanation
yar dekh :amount= 1980 n 3465

hcf= 5*11*9
bt it is said amt of each mango is b/w 24 p n 36 p

so 33p is ans = 3*11
4331
@mickym said: @alkoszzz
25% is the ans
yar soln dena
4333

two identical circles intersect so that their centers and the points at which they intersect each other, form a square of side 1 cm. the area in cm^2 of the portion that is common to both of the circles?