d Men & Food MCQ1(18 men can eat 20 kg of rice )
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Men & Food MCQ1(18 men can eat 20 kg of rice )

Men & Food MCQ1 : 18 men can eat 20 kg of rice in 3 days. How long will 6 men take to eat 40 kg of rice?

a) 20            b) 18               c) 32           d) 20

Solution:

18 men can eat 20 kg of rice……….

This is a problem of compound proportion!

We generally know that if number of men increases then food will be for less days. It means if men increases then days and food stock both decreases!

 

We arrange data as under:

 

drawit diagram

 

we write it as;

\[ \frac{3}{x}=\frac{6}{18}\times \frac{20}{40} \]

\[ x= \frac{18\times 40\times 3}{6\times 20}= 19 \]

 

 

So, they can eat it upto 18 days. ———— Option b is correct

 

 

 

 

 

 

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