Question

The perimeter of a triangle is 108ft. The sides lengths are in a ratio of 2:3:7. How long is the shortest side?

Answer 1

Answer:

18ft

Step-by-step explanation:

2+3+7 = 12 (this means that 108ft is $\frac{12}{12}$)

The shortest side would be $\frac{2}{12}, or \frac{1}{6}$ of 108ft

To find this, we divide 108 by the denominator (6) to get 18ft

We would usually multiply this by the numerator when finding a fraction of an amount, but as the numerator is 1, the answer would stay as 18ft.