Question

you have 18 stamps from Mexico in your stamp collection. These stamps represent 3/8 of your collection. The rest of the stamps are from the United States. How many stamps are from the United States?

Answer 1

Let us say there are total x number of stamps.

Number of stamps from Mexico are 18.

Fraction of stamp from Mexico = 3/8 of total stamps.

Equation for this would be:

$\frac{3}{8} x =18$

dividing right side by 3/8,

x = 18÷ 3/8

x = 48

So total number of stamps are 48.

We have to find number of stamps from United States.

Stamps from United states = total stamps - stamps from Mexico = 48 -18=30

Stamps from United states are 30.