Question

truck travels at 40 km per hour for 3 hours and at 35 km per hour for 2 hours find its average speed​

Answer 1

Answer:

38 kmph

Step-by-step explanation:

we can know how much it travelled by multiplying 40 × 3 = 120

it travels 120 km first

then we can multiply 35 by 2

35 × 2 = 70

it travels 70 kilometre after that

Total distance is 70 + 120 = 190km

total time is 3 + 2 is equal to 5

Total distance 190 ÷ 5 = 38 kmph

Answer 2

38 kmph is the answer.

Step-by-step explanation:

we can konw how much it travelled by multiplying 40×3 for first 3 hours

• 40×3=120

it travelled 120 km first

then we can multiply 35 by 2

• 35 × 2 = 70

if travelled 70 km after that

total distance is distance 1 + distance 2

• 70 + 120 = 190km

total time is time 1 + time 2

• 3 + 2 = 53+2=5

average speed = total distance/total time

= 190/5 =38 kmph

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