A husband contributes 7% of his income into a fund and his wife contributes 4% of her income. If the husband earns N5,500 per annum (p.a) and his wife earns N4,000 p.a, find the sum of their contribution to the fund.

Uche and Chidi shared a sum of money on the ratio m:n. If Chidi’s share was N4,200.00, what was Uche’s share?

Convert the speed 90 km per hour of a car to metres per second
 

Mrs. Jones is expecting a baby. The probability that it will be a boy is ½ and the Probability that the baby will have blue eyes is ¼. What is the probability that she will have a Blue-eyed boy?
 

A box contains 2 white and 3 blue identical marbles. If two marbles are picked at Random, one after the other, without replacement, What is the probability of picking two marbles of different colours?