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ATQ, Let the usual speed be 10x km/h. The reduced speed = (9/10) × 10x = 9x km/h Using the formula Distance = Speed × Time, 
Usual speed = 10x = 50 km/h.
The age of a father is 4 times that of his son. After 6 years, the father will be 3 times as old as his son. Find the present age of the son.
The ratio of A and B present age is 4:3. The product of their ages is 4800. What will be the ratio of their ages after 5 years?
The ratio of A and B present age is 7:4. The product of their ages is 2800. What will be the ratio of their ages after 5 years?
The ratio of the present ages of P and Q is 7:4 respectively. If the age of P 13 years hence from now will be 125% more than the age of Q 4 years ago fr...
Four years ago, the ages of the father and his son were in the ratio 7:2. Four years hence, the ages of the father and his son will be in the ratio 9:4....
There are 5 children in a family. The average age of the children is 10 years. If the present age of their mother and father is added, the average age o...
Twelve years ago, the age ratio between 'A' and 'B' was 5:4. In five years, their average age is expected to be 44 years. Determine 'A’s age eight yea...
In a family a couple has a son and a daughter. The age of the father is four times that of his son and age of her daughter is half of her mother. The wi...
