MATHEMATICS

JAMB 2005 - Question 15

Mathematics 2005 JAMB Past Questions - Question 15: The time taken to do a piece of work is inversely proportional to the number of men employed. if it takes 30 men to do a piece of work in 6 days ,how many men are required to do the work in 4 days?

The time taken to do a piece of work is inversely proportional to the number of men employed. if it takes 30 men to do a piece of work in 6 days ,how many men are required to do the work in 4 days?
A:
B:
C:
D:
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Correct Answer

C

Explanation

t = time taken and N = number of ment ∝ 1/Nt = K/NK = NtK = 30 * 6K = 180∴t = 180/N4 = 180/N4N = 180N = 180/445 men

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