Question

Example 15: A car travels 90 km in 23 hours.
la) How much time is required to cover 30 km with the same speed?
(b) Find the distance covered in 2 hours with the same speed.​

Answer 1

Step-by-step explanation:

a)

$90km \: = \: 23hours \\ 30km \: = x \\ \frac{23 \times 30}{90} \\ \frac{690}{90} = \frac{23}{3} \: hours$

b)

$23 \: hours \: = \: 90 \: km \\ 2 \: hours \: = \: y \\ \frac{90 \times 2}{23} = \frac{180}{23} \\ = 7.826 \: km$