Fractions Decimals Approximations And Percentages - Mathematics Jamb Past Questions and Answers

Question 1 :

• JAMB 1979

\((1.28 \times 10^{4}) \div (6.4 \times 10^{2})\) equals

A. 2 x 10^-5
B. 2 x 10^-1
C. 2 x 10¹
D. 2 x 10^-4

Question 2 :

• JAMB 1979

(3.2)² - (1.8)² equals

A. 7.0
B. 2.56
C. 13.48
D. 2.0
E. 0.07

Question 3 :

• JAMB 1979

After getting a rise of 15%, a man's new monthly salary is N345. How much per month did he earn before the increase?

A. N330
B. N396.75
C. N300
D. N293.25
E. N360

Question 4 :

• JAMB 1979

The annul profits of a transport business were divided between the partners A and B in the ratio 3 : 5. If B received N3000 more than A, the total profit was

A. N5000
B. N1800
C. N12000
D. N24000
E. N8000

Question 5 :

• JAMB 1979

A trader goes to Ghana for y days with y cedis. For the first x days, he spends X cedis per day. The amount he has to spend per day for the rest of his stay is

A. \(\frac{y(y - x)}{y - x}\) cedis
B. \(\frac{Yy - Xx)}{y - x}\) cedis
C. \(\frac{Y - Xy)}{y - x}\) cedis
D. \(\frac{Y - X}{y - x}\) cedis
E. \(\frac{Y - Xx}{y - x}\) cedis