Question

An event lasts 4 hours and 20 minutes. How long did the event last in seconds?

a) 14,400
b) 15,600
c) 72,000
d) 86,400

Answer 1

The event last in 15,600 seconds.

Answer: Option B

Step-by-step explanation:

We know that there is 60 seconds in one minute i.e., 1 minute = 60 seconds

There is 60 minutes in one hour. i.e., 60 minutes = 1 hour.

Given : An event lasts 4 hours and 20 minutes

4 hours contains 240 minutes,

`4 * 60=240 \text { minutes }`

When the above expressed in seconds,

`240 * 60=14400 \text { seconds }` ------>eq. 1

When 20 minutes expressed in seconds,

`20 * 60=1200 \text { seconds }`------->eq. 2

Adding both eq. 1 and 2, we get

4 hours and 20 minutes = 14400 + 1200 = 15600 seconds