The ratio of water and milk in a 30 liter mixture is 7 : 3. Find the quantity of water to be added to the mixture in order to make this ratio 6 : 1.
A. 30
B. 32
C. 33
D. 35
Answer: Option C
Solution(By Examveda Team)
Here,Let water = 7x and milk = 3x Now, 7x + 3x = 30 x = 3 So, water = 7x = 7 × 3 = 21 liter Milk = 3x = 3 × 3 = 9 liter Now, we keep milk constant and add water to mixture to get ratio 6 : 1 Let water in this mixture = 6y and milk = y We have, milk = 9 liter, so y = 9 liter Water = 6y = 6 × 9 = 54 liter Then extra water to be added is 33 literThis Question Belongs to Arithmetic Ability >> Ratio
ratio 7 = water
ratio 3 = milk
total ratio (10) = 30 liters
so, 30--------------10 (for milk)
m -------------- 3 (cross multiply)
30 x 3 = m(10)
milk=9
water =21 liters
let x amount of water added to mixture and new ratio is 6 : 1
so, water milk
21+x : 9
6 : 1
(21+x) 1 = 6 x 9
21+x = 54
x=33 ANSWER
The previous ratio is 7:3 now,
Quantity of water in mixture= 30*7/10=21
Quantity of milk in mixture=30*3/10=9
The new ratio is 6:1
So, let water added=x
According to new ratio,
(21+x)/9=6/1
21+x=54
x=33
The extra water added is 33 liters.
when 1 liter of water is added to a mixture of milk and water,the new mixture contains 20% milk.when 1 liter of milk is added to the new mixture the resulting mixture contains 33 % milk.the % of milk in the original mixture was?
i dont understand this solution