Question

Hamidah travels 90 miles at an average speed of 50 mph.
She then travels a further 60 miles.
The average speed for the entire journey is 54 mph.
Assuming Hamidah didn't stop, what was her average speed for the final 60 miles to 2 dp?

Answer 1

Answer: 61.36mph

Step-by-step explanation:

let the speed be x

$\frac{90}{50} + \frac{60}{x } = \frac{90 + 60}{54}$

$1.8 + \frac{60}{x} = \frac{25}{9}$

60/x=44/45

X = 61.36 (mph)

So her average speed for the 60 miles is 61.36 mph.

hope it helps #itzadmirer