Question

The 90km/h bus runs between the two stations in 2 hours and 20 minutes.

1) How far are these stations from each other?
2) How long does it take for a bus with a speed of 70km/h to travel the same route?

Answer 1

1. distance is 210km

2. distance is 163•3km

Explanation:

QN1;

STEP1;

SPEED=DISTANCE÷TIME

90km/h= X ÷ 2 hrs and 20mins

STEP2;

CHANGE 20 MINS INTO HRS

1 hr = 60mins

x

? = 20mins

20mins * 1hr= 1/3hr

60mins

STEP3;

Speed=distance÷time

90km/h= X ÷ 21/3

Distance= speed * time

X = 90km/h * 21/3hrs

distance is 210km

QN 2;

Speed=distance ÷

70km/h= X ÷ 21/3hrs

Distance=speed * time

X = 70km/h * 21/3hrs