Ratio, proportion and rate - Jamb Mathematics Past Questions and Answers

Question 6:

• JAMB 2015

If three staff of Myschool Limited agreed to share their salary arrears in the ration of their ages, which are 18 years, 20 years, 22 years respectively. If the sum of the money collected is N120,000.00K, How much does the second staff received?

A. N36,000
B. N44,000
C. N40,000
D. N15,000

Question 7:

• JAMB 2015

Find at which rate per annum simple interest N525 will amount to N588 in 3 years.

A. 3%
B. 2%
C. 5%
D. 4%

Question 8:

• JAMB 2015

A pipe made of metal 10cm thick has an external radius of 11cm. find the area of metal in making 2.4cm of pipe

A. 24πcm²
B. 21πcm²
C. 15πcm²
D. 17πcm²

Question 9:

• JAMB 2014

A man donates 10% of his monthly net earnings to his church. If it amounts to N4,500, what is his net monthly income?

A. N40,500
B. N45,000
C. N52,500
D. N62,000

Question 10:

• JAMB 2013

3 girls share a number of apples in the ration 5:3:2. If the highest share is 40 apples, find the smallest share

A. 36
B. 24
C. 16
D. 38