Question

pencils come in packets of 10 and erasers come in packets of 12 . how may packets am i gonna need to get the same number of pencils and erasers

Answer 1

Factors:

10 = 5*2

12 = 2*2*3

Least common multiple: 2*2*3*5

                     =60

you will need 6*10 = 60 or 6 packets of pencils

and 5*12 = 60  and 5 packets of erasers