NUMBER AND NUMERATION - Jamb Mathematics Past Questions and Answers

Question 191:

• JAMB 1981

The ratio of the price of a loaf of bread to the price of a packet of sugar in 1975 was r : t. In 1980, the price of a loaf went up by 25% and that of a packet of sugar went up by 10%. Their new ratio is now

A. 40r:50t
B. 44r : 50t
C. 50r : 44t
D. 44r:55t
E. 55r:44t

Question 192:

• JAMB 1981

Which of the following fractions is less than one-third?

A. \(\frac{22}{63}\)
B. \(\frac{4}{11}\)
C. \(\frac{15}{46}\)
D. \(\frac{33}{98}\)
E. \(\frac{122}{303}\)

Question 193:

• JAMB 1981

Evaluate correct to 4 decimal places 827.51 x 0.015

A. 8.8415
B. 12.4127
C. 124.1265
D. 12.4120
E. 114.1265

Question 194:

• JAMB 1981

A sum of money invested at 5% per annum simple interest amounts to $285.20 after 3 years. How long will it take the same sum to amount to $434.00 at 7\(\frac{1}{2}\)% per annum simple interest?

A. 7\(\frac{1}{2}\) years
B. 10 years
C. 5 years
D. 12 years
E. 14 years

Question 195:

• JAMB 1981

By selling an article for N45.00 a man makes a profit of 8%. For how much should he have sold it in order to make a profit of 32%?

A. N180.00
B. N59.00
C. N63.00
D. N58.00
E. N55.00