the running time of a video game is 4 hours with a possible error of 1%.Find in hours ,minutes and seconds the least possible running time of the video

Question

it's igcse

Answer 1

4 hours ± 1%

 

.01(4) = .04 hours

 

(.04 hours)(60 mins/hr)(60 sec/min)

= 144 seconds or 2 mins 24 seconds

 

The least possible running time is

(4 hours)-(2 mins 24 seconds)

 

= 3 hrs  59 mins   60 sec

  -(         2 mins    24 sec)

 ------------------------------

  3 hrs  57 mins   36 secs