Question

5 machines take 5 min to make 5 pencils how long it would take for 100 machines to make 100 pencils

a 10min

b 5min

c 100 min

with solution

Answer 1

Answer :

5 machines , can make 5 pencils is 5 minutes ,
or,
1 machines , can make 5 pencils is 5 $\times$ 5 minutes
Thus
1 machines , can make 1 pencils is $\frac{5\times 5}{5}$ minutes
So,

1 machines , can make 100 pencils is $\frac{5\times 5\times 100}{5}$ minutes
Therefore

100 machines , can make 100 pencils is $\frac{5\times 5\times 100}{5\times 100}$ = 5 minutes ,

So,

Option A ( Ans )