1.

-) A car travels at a speed of 50 km/hr for 30minutes, at 30 km/hr for next 15 minutesand then 70 km/hr for next 45 minutes.What is the average speed of the car?​

Answer»

ANSWER:

T = 30+15+75 = 120

D = 50+30+70 = 150

Answer = 150/120

= 5/4

EXPLANATION:

FORMULA of SPEED = d

t



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