WAEC Mathematics 1991 (August) Question 15

Question 15

Commercial Arithmetic

A headmaster 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 the wife earns N4,000 (p.a), find the sum of their annual contribution to the fund.

A.N1.045
B.N605
C.N545
D.N490
E.N440

Show the answer and explanation

Answer: C (N545)

Explanation

7% of N5,500 = N385 and 4% of N4,000 = N160; together N545.