Question

11. A car travels a certain distance at a speed of45 km/h in 5 hours. What must be the speed of the car to cover the same distance in 4 hours?
A flood relief centre has sufficient stock of food
S to last for a week for 2500 victims. How long will the provisions last if the number of victims increases to 5000? Suggest ways in which we can help people in flood-affected areas.​

Answer 1

s1=d1/t1

s2=d2/t2

d1=d2

45=d1/5----1

x=d2/4------2

1÷2

we get x= 56.2km/h

Answer 2

Step-by-step explanation:

let the distance be x.

so, distance=speed*time

x=45*5

x=225 km

now, speed=distance/time

=225/4

=56.25 km/h