Question

<br />2. A bus travelling at 42 km/h covers a distance in 5 h. How much time would it save if it <br />increases its speed by 8 km/h?<br />​

Answer 1

Answer:

Time required when speed is increased by 8km/hr is 4.2 hr.

Step-by-step explanation:

Given:1) Speed=42km/hr. 2) Time=5hr

By formula :Speed=distance/time (1) Distance=Speed*time

So, Distance=42km/hr*5hr=210 km

Therefore,time required when speed is increased by 8 km/hr:

Time =Distance/speed from (1)

Increased speed=(42+8)km/hr=50km/hr

Time=210/50

Time=4.2hr