Question

A car moves for half of its time at 80 km/h and for rest half of time at 40 km/h
distance covered is 60 km. What is the average speed of the car
(a) 60 km/h
(b) 80 km/h
(c) 120 km Ih
(d) 180 km/h
​

Answer 1

average speed=

distance÷time

or.

d/t

so here is your answer mate---

1. 140/60=2°1/3
2. 7/4
3. 7/6
4. 7/8

p.s-change it into whole number

yes here to indicate the whole number I have used this sign-°