# How many Times will It Flash in 3/4 of and Hours?

If a light flashes every 6 seconds, how many times will it flash in 3/4 of and hours?

- 225
- 250
- 450
- 480

**Answer: (3) 450**

**Explanation:-
**If a light flashes every 6 sec.

Then, the number of light flashes in a min = 60/6

= 10 times

3/4 hour = 60 x 3/4

= 15 x 3

= 45 min

Then, the number of light flashes in 45 min = 10 x 45

= 450 times

Hence, the answer is (3) 450.