Question

A store has provision which would last for a certain number of men for 21 days. For one seventh of the men it will last for how many days?​

Answer 1

Let certain number of men=x

So,

x number of men can have provision of 21 days

And

1 man can provision of 21x days

one seventh(x/7)men can have provision for 21x/x/7

=21*7=147(ans)

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