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ATQ, Present (original) quantity of milk in the mixture = 200 × (3/8) = 75 litres So, new quantity of mixture = 75 ÷ 0.25 = 300 litres So, quantity of water to be added = 300 - 200 = 100 litres
In a classroom there are 14 boys and 11 girls. Average age of each boy and each girl is 21 years and 15 years respectively. The sum of ages of all the b...
The present ages of 'A' and 'B' are in the ratio of 6:7. 20 years ago, A's age was 50% less than B's age at that time. Find the difference between thei...
Eight years from now, Kirti's age will be twice that of her brother Kunal, but 6 years ago she was four times as old as Kunal was then. Find the pre...
B is 3 years older than A and A is 7 years older than C. If the sum of the age of A and C is 27 years, then find the sum of the ages of all three.
The average age of Rohit’s parents is 42 years. The ratio of his father and mother’s age is 4 : 3 respectively. Find his mother’s age?
Ratio of present ages of A and B is 6:7, respectively. C who is 4 years older than A will become 40 years older after 12 years. Find the present age of B.
M and S currently have ages in the ratio of 3:4. R's present age is 50% more than S's present age. The ratio of M's age one year from now to R's age thr...
6 years ago, the average age of a family of five persons was 38 years. In between these 6 years the family adopted a girl. Now at present the average ag...
The vice-captain of a cricket team of 11 members is 24 years old and the opener is 5 years older. If the ages of these two are excluded, the aver...
A girl’s age is 125% of what it was 10 years ago, but 75% of what it will be after 10 years. What is her present age?
