# Question #8718e

##### 1 Answer
Oct 18, 2017

first half: 48 km/h

second half: 72 km/h

#### Explanation:

Based on the problem as you've stated it, I think what you have is:

$\frac{x + 1.5 x}{2}$ = 60

$x \left(1 + 1.5\right) = 120$

$2.5 x = 120$

$x = \frac{120}{2.5} = 48$

$1.5 x = 72$