Please solve the no. ii) answer.
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Please solve the no. ii) answer.
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Answer:
is this 9th standard portion......
Answer:
hey mate here is ur ans
Explanation:
given, u=30km/h t1 = 30min = 30÷60 = 1/2
v = 40km/h t2 = 40min = 40÷60 = 2/3 hr
total distance = total speed ×total time
= 70×7/6 = 81.6
average velocity = total distance /total time
= 81.6/(7/6) = 69.94 km/hr
hope it help u