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

The event last in 15,600 seconds.

Option B

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,

When the above expressed in seconds,

              ------>eq. 1

When 20 minutes expressed in seconds,

              ------->eq. 2

Adding both eq. 1 and 2, we get

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

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explanation:

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