Question

E. Numerical Problems.
1. A vehicle travels 25 km in 15 minutes. Calculate its speed in ​

Answer 1

Answer:

The total distance is 55 km, the total time is 1.5 hours and the average speed is 36.67 km/h

Explanation:

Step 1 : Write down the relevant formulas :

Distance = Speed × Time

Average speed = Total distance / Total time.

Step 2 : Solve the questions.

1) Total distance = Distance traveled at 30 km/h in 30 minutes + Distance traveled for 1 hr at 40 km/h

Distance traveled at 30 km/h = 30 × 0.5 = 15 km

Distance traveled at 40 km/h = 40 × 1 = 40 km

Total distance = 40 km + 15 km = 55 km

2) Total time = time taken in the first part of the journey + time taken in the second part of the journey

= 0.5 + 1 = 1.5 hours

3) Average speed = Total distance / Total time.

This is given by :

= 55/1.5 = 36.67 km/h

Answer 2

Answer:

Hlo mate here is ur answer.

Explanation:

speed = distance / time.

speed = 25 / 15

= 5/3 km / hr.

if we should get answer in metre

25 * 5/18 /15 .

hope it helps u dear...