@sonamaries7 reply karke khatam karo...Sona hai..kal exam hai :mad:
@ayushnasa ,@rubikmath : typo 
...
2- [ rt(6407522209)/rt(3600840049)]..(7 key me prob hai meri
) is the qs...ab bolo
...2- [ rt(6407522209)/rt(3600840049)]..(7 key me prob hai meri
) is the qs...ab bolo@sonamaries7 said:@ayushnasa ,@rubikmath : typo ...2- [ rt(6407522209)/rt(3600840049)]..(7 key me prob hai meri ) is the qs...ab bolo
give up 😛
Ans A hai....
@sonamaries7 said:ratta?
wolframalpha 😛 Itna lamba kaise karte honge?? Itne close kabhi options nahi ane
@ayushnasa
@ayushnasa said:wolframalpha Itna lamba kaise karte honge?? Itne close kabhi options nahi ane
A ...i think selecting the option which gives much accurate approxiamtion after decimal point !!! 😛
@ayushnasa said:wolframalpha Itna lamba kaise karte honge?? Itne close kabhi options nahi ane
[ 2 - (80047/60007)] ko divide kaise karenge! 
guys plz help...
gold is 19 times as heavy as water and copper is 9 times as heavy as water. the ratio in which these two metals be mixed so that the mixture is 15 times as heavy as water.
@bada.bhai said:guys plz help...gold is 19 times as heavy as water and copper is 9 times as heavy as water. the ratio in which these two metals be mixed so that the mixture is 15 times as heavy as water.
gold:copper = 3:2
Just assume arbitary values and solve
@bada.bhai said:guys plz help...gold is 19 times as heavy as water and copper is 9 times as heavy as water. the ratio in which these two metals be mixed so that the mixture is 15 times as heavy as water.
Gold:Copper = 3:2 ?? 
I applied Alligation!
Gold, G = 19 Water
Copper, C = 9 Water
Required result, R= 15 Water
Now, Alligation..
For copper = G - R = 4
for Gold = R - C = 6
hence, G:C = 6:4 => 3:2
I applied Alligation! Gold, G = 19 Water
Copper, C = 9 Water
Required result, R= 15 Water
Now, Alligation..
For copper = G - R = 4
for Gold = R - C = 6
hence, G:C = 6:4 => 3:2
@bada.bhai said:guys plz help...gold is 19 times as heavy as water and copper is 9 times as heavy as water. the ratio in which these two metals be mixed so that the mixture is 15 times as heavy as water.
3:2 ??
@bada.bhai said:guys plz help...gold is 19 times as heavy as water and copper is 9 times as heavy as water. the ratio in which these two metals be mixed so that the mixture is 15 times as heavy as water.
bhai.. OA de do!
answer is 2:3
@bada.bhai said:guys plz help...gold is 19 times as heavy as water and copper is 9 times as heavy as water. the ratio in which these two metals be mixed so that the mixture is 15 times as heavy as water.
take it as
water = rs 10 per kg
gold = rs 190 per kg
copper = rs 90 per kg
x = quantity of gold
y = quantity of copper
(190*x + 90*y)/(x + y) = 150
ratio = x : y = 3 : 2
water = rs 10 per kg
gold = rs 190 per kg
copper = rs 90 per kg
x = quantity of gold
y = quantity of copper
(190*x + 90*y)/(x + y) = 150
ratio = x : y = 3 : 2
Here's an easy one . : You walk upwards on an escalator, with a speed of 1 step per second. After 50 steps you are at the end. You turn around and run downwards with a speed of 5 steps per second. After 125 steps you are back at the beginning of the escalator.
hey frnds 2:3 is the answer. u r getting a wrong answer
19x+9y=15
x+y=1
find x/y; 3/2
x+y=1
find x/y; 3/2
let x gm of water be taken
gold= 19x
copper=9x
let 1gm of gold be mixed with y gm of copper
then, 19x + 9xy = 15x(1+y)
on solving y = 2/3
hence proved
@bada.bhai said:let x gm of water be takengold= 19xcopper=9xlet 1gm of gold be mixed with y gm of copperthen, 19x + 9xy = 15x(1+y)on solving y = 2/3hence proved
abe to gold/copper likaloge to 1/(2/3) karoge = 3/2. I proved you wrong. :P
@Torque024 said:abe to gold/copper likaloge to 1/(2/3) karoge = 3/2. I proved you wrong.
but book also says 2:3 is correct