EXPERTS PLZZ ANSWER NO .2, 3,4 EXERCISE 12.1
1. A distance aso in 35 min. Find the speed of the truck in and
distance be covered at a speed of S tn;s?
A distance of two stations in 105 min. the:
(b) time taken to cover a distance of 630 km
A person travels a total distance of km. He covers the first halfat a speed of
the other half at 45 km'h_ Find;
(a) the total time taken to complete the entire journey
S A truck travels some distance at a speed of 35 knvh in 120 min and the remaining distance a
speed of 48 km/h in 90 min. Determine the:
(b) average speed over the entire Journey
(a) Iota/ distance covered
6 Rahul covered a journey of 720 km in 420 minutes. If one-third of the journey is covered a
speed of 120 km/h and half of the remaining journey at a speed of 80 km/h, at what speed did
he complete his remaining journey?
7. Ramesh travels a total of 740 km, out of which he drives a car for 156 km at 52 travels
146 km in the bus at the speed of 36.5 knvh and covers the remaining distance by train in
hours. Determine the:
(a) speed at which the train moves
(b) average speed for the whole journey
