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

Question 261 :

• JAMB 2020

Reach each number to two significant figures and then evaluate \(\frac{0.02174 \times 1.2047}{0.023789}\)

A. O
B. 0.9
C. 1.1
D. 1.2

Question 262 :

• JAMB 2020

Four boys and ten girls can cut a field first in 5 hours. If the boys work at \(\frac{5}{4}\) the rate at which the girls work, how many boys will be needed to cut the field in 3 hours?

A. 180
B. 60
C. 25
D. 20

Question 263 :

• JAMB 2020

What is the product of \(\frac{27}{5}\), \((3)^{-3}\) and (\(\frac{1}{5})^{-1}\)?

A. 5
B. 3
C. 1
D. \(\frac{1}{25}\)

Question 264 :

• JAMB 2020

If N225.00 yields N27.00 in x years simple interest at the rate of 4% per annum, find x.

A. 3
B. 4
C. 12
D. 17

Question 265 :

• JAMB 2020

Find the simple interest rate percent annum at which N1000 accumulates to N1240 in 3 years.

A. 6%
B. 8%
C. 10%
D. 12%