Question

The average speed of a car is twice the
average speed of a truck. The truck covers
648 kms in 24 hours. How much distance
will the car cover in 15 hours?
.) 820 kms 2) 1024 kms 3) 810 kms
-) 980 kms 5) 910 kms​

Answer 1

Answer:

let speed of car= x km/h

let speed of truck= y km/h

according to question,

x= 2y

distance travelled by truck= 648 km

time taken = 24hours

speed= distance travelled/time

y= 648/24= 27 km / h

then x= 2y= 2(27)= 54 km / h

now, let distance travelled by car= d

time = 15 hour

speed= d/t= d/15

54= d/15

d= 54×15= 810 km