# If 40 can each make 3 toys per hour and 20% of those toys are trains, how many toy trains are there?

Dec 13, 2016

$24 \text{ trains}$

#### Explanation:

$\text{Total number of toys made} = 40 \times 3 = 120$

We now require to find 20% of 120

$\frac{20}{100} \times \frac{120}{1} = \frac{20}{\cancel{100}} ^ 5 \times {\cancel{120}}^{6} / 1 \leftarrow \text{ cancel using 20}$

$= {\cancel{20}}^{4} / {\cancel{5}}^{1} = \frac{6}{1} \leftarrow \text{ cancel using 5}$

$\text{Number of trains made } = 4 \times 6 = 24$