Question

The speed of a car increases by 3 km per hour after every 1 hour if the distance travelled in the first one hour was 26 kms what was the total distance travelled by the car in 12 hours

Answer 1

THE CAR COVERS THE DISTANCE IN 1 HOUR =26
THE SPEED OF A CAR INCREASES AFTER EVERY 1 HOUR =3 KM
THE TOTAL DISTANCE COVERED BY THE CAR IN 12 HOURS                   =3×12+26 KM=36+26 KM =62 KM

Answer 2

Answer:

This answer can be solved with Arithmetic Progression method..

Distance travelled in 1st hour=26

Speed increases by 3 km/hr so next hour distance travelled would be 29 and so on ….

So the figures would be 26 29 32….

No. Of. Hours =12

We can apply the sum of A.P formula =n/2(2a+(n-1)d)

Where n=12,a=26,d=3

Thus we get ,Total distance = 6(52+33)=510 km(Answer)