Question

4) A car covers a certain distance in thr 30 mins at 60 km/hr. If it moves at
45km/hr.it will take -- hrs
2
3
4
5​

Answer 1

t = 30 min = 1/2 hr

Speed = s = 60km/hr

speed = s' = 45km/h

using direct variation

Time Speed

1/2. 60

x. 45

(60 × x)/45/2

120 / 45 = x

2.67 hr = x