Question

a car moves at speed of 40 km/hr for 2 hours and then speed of 50km/hr for next three hours . find the average speed of a car​

Answer 1

Answer:

46kmph hope it helps

Step-by-step explanation:

v-average=x1+x2/t1+t2

now x1=v1t1 and x2=v2t2

so v-average=v1t1+v2t2/t1+t2

here v1=40kmph t1=2 hours and v2=50kmph and t2=3 hours

therefore, v-average=40.2+50.3/2+3

                                 =80+150/5

                                 =230/5

                                 =46kmph