1.

The speed of the car is 60 km per hour. It takes 3 hours to reach its destination if the speed of the car is increased to 90 km per hour how long will it take to cover the same distance

Answer»

We can wasly solve it by USING formula
SPEED = distance / time

The speed of car is 60 km per hour and it takes 3 hour to reach its DESTINATION SO
s = d / t
60 = x / 3
x = 60 ×3
x = 180 km /HR

the speed of car increased to 90 km /hr so
S = d/t
90 = 180 / t
90t = 180
t = 180 /90
t = 2hour



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