Jamb Mathematics 1988 Past Questions and Answers

Question 21:

• JAMB 1988

Simplify \(\frac{1\frac{1}{2}}{2 \div \frac{1}{4} \text{of } 32}\)

A. \(\frac{3}{256}\)
B. \(\frac{3}{32}\)
C. 6
D. 85

Question 22:

• JAMB 1988

A 5.0g of salt was weighted by Tunde as 5.1g. What is the percentage error?

A. 20
B. 2
C. 1.1
D. 0.2

Question 23:

• JAMB 1988

Two sisters, Taiwo and Keyinde, own a store. The ratio of Taiwo's share to Kehinde's is 11:9. Later, Keyinde sells \(\frac{2}{3}\) of her share to Taiwo for N720.00. Find the value of the store.

A. N1,080.00
B. N2,400.00
C. N3,000.00
D. N3,600.00

Question 24:

• JAMB 1988

A basket contain green, black and blue balls in the ratio 5 : 2 : 1. If there are 10 blue balls. Find the corresponding new ratio when 10 green and 10 black balls are removed from the basket

A. 1 : 1 : 1
B. 4 : 2 : 1
C. 5 : 1 : 1
D. 4 : 1 : 1

Question 25:

• JAMB 1988

A tax payer is allowed \(\frac{1}{8}\)th of his income tax-free, and pays 20% on the remainder. If he pays N490.00 tax, what is his income?

A. N560.00
B. N2,450.00
C. N2,800.00
D. N3,920.00