Question
5 years ago ratio of the ages of the two persons A and B
was 3:1. 3 years hence the ratio of their ages will be 7:3. Find the present age of B.Solution
5 years ago, Let A’s age be 3x and B’s age be x. According to the question, 3 years hence, => (3x + 8)/(x + 8) = 7/3 => 9x + 24 = 7x + 56 => x = 16 Present age of B = x + 5 = 16 + 5 = 21 years
If the 6-digit number 324a16 is completely divisible by 8, then the largest integer that can replace a is:
Find the remainder obtained by dividing 961125 by 37.
Which of the following numbers is divisible by 11?
What is the smallest perfect square that is divisible by each of 42, 48 and 60?
A number n when divided by 6, leaves a remainder 3. What will be the remainder when (n2 + 5n + 8) is divided by 6?
If 2557Â + 819Â is divisible by which of the following numbers.
Find the greatest number that will divide 49, 147 and 322 to leave the same remainder in each case.
Which of the following numbers is divisible by 22?
If the seven-digit number 5728p9 is exactly divisible by 11, then what is the value of (11 p), where p > 0?