Question

a truck travels at 40km/h for 3h and at 35 km/h for 2h. Find its average speed​

Answer 1

Answer:

38 kmph

Step-by-step explanation:

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

$40 \times 3 = 120$

it travelled 120 km first

then we can multiply 35 by 2

$35 \times 2 = 70$

if travelled 70 km after that

total distance is distance 1 + distance 2

$70 + 120 = 190km$

total time is time 1 + time 2

$3 + 2 = 5$

average speed =

$total \: distance \div total \: time \\ = 190 \div 5 =38 kmph$

Answer 2

Answer:

38km is right answer ✌️✌️