Question

A cart travel at 30km/h at uniform speed of 40km/h and next 30km at uniform speed of 20km/h.find the average speed.​

Answer 1

Answer:

ach yaha ek mistake hai

Explanation:

30 km distance hoga

min using ke according bana rah Hoon ok

time in I condition

30/40 hr

3/4 hr

time in second condition

30/20

3/2 hr

total time

3/4+3/2 = 9/4

so avg speed

60/9/4

80/3 km / hr ok

Answer 2

Answer:

Explanation

Given S1=40km/hr

D1=30km

S2=20km/hr

D2=30km

T1=30/40= 0.75 hr

T2=30/20=1.5 hr

Therefore

Avg speed= (30+30)/0.75+1.5

=26.6km/hr