Question

If a film camera takes a picture in 1/24 second, then at the same rate, how many pictures will it take in three minutes?

Answer 1

1 min =60sec
3 min = 180 sec

1/24sec= 1pic
180 sec= ___
=180×1/1/24
=180 ×24
=5320

5320 pic are taken in 3 min
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Answer 2

let
a picture takes in=1/24sec (given)
then,
in 1 second can take pictures=24
in 3 minutes =24×60×3
=4320 pictures