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Question

5 masons built a wall in 2 days. If the wall has to be built in a single day, how many masons should be employed?

A
9 masons
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B
12 masons
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C
8 masons
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D
10 masons
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Solution

The correct option is D 10 masons
Given: A wall is built in 2 days by 5 masons.​

We know that lesser the number of days to build, more will be the number of masons required.​

So, Number of days 1Number of masons

Let number of days be ‘d’ and number of masons be ‘m’​

Then, d is inversely proportional to m​

Therefore,​

d1m1=d2m2

Given​

d1=2 days​

m1=5 masons​

d2=1 day​

m2= number of masons required​

2×5=1×m2

=m2=(2×5)1=10 masons​

Therefore, 10 masons should be employed to build a wall in a single day.​


Answer: (D) 10 masons​

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