A car travells certain distance taking 7 hrs in forward journey, during the return journey increased speed 12km/hr takes the time 5 hrs. What is the distance travelled.

suppose speed is X kmph, so distance covered in 7 hours is equal to 7X kms. now speed is increased to 12 kmph, and same distance is covered in 5 hours so total distance covered is equal to (X+12)5 kms. so 7X= (X+12)*5 or X= 30 so distance travelled is 7* 30= 210kms.

## Distance travelled

a) 210 KMs

B) 30 KMs

c) 20 KMs

d) None Of these

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