Amovie is 1 7/8 hours long. after 45 minutes, how much of the movie is left?

The movie time left to watch is 67.5 (67 minutes 30 seconds) (1 1/8) hours

Given that :

Total length of movie = 1 7/8 hours

Converting to minutes :

1 hour = 60 minutes

7/8 hours = (7/8) × 60 minutes = 52.5 minutes = 52 minutes 30 seconds

Total movie length = (60+52.5) = 112 minutes 30 seconds

Minutes watched = 45 minutes

Movie time left = (Total movie length - Minutes watched)

Movie time left = (112.5 - 45) minutes = 67.5 minutes

Hence, movie time left is 67.5 minutes

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Here we need to perform a change of units, from hours to minutes.

The answer is: After 45 minutes there is a 0.6 of the movie left

We know that the movie lasts (1 and 7/8) hours.

We should transform this quantity to minutes.

Using the relation:

1 hour = 60 minutes

1 = (60min)/(1 h)

We can write:

(7/8)h = (7/8)h*(60min)/(1 h)  = 52.5 mins

Then:

(1 + 7/8) hours = 60 mins +  52.5 mins = 112.5 mins

After 45 minutes, the time left of the movie is:

112.5 mins - 45 mins = 67.5 mins

And in proportion, if 112.5 mins is the whole movie, then 67.5 mins represents:

(67.5 mins)/( 112.5 mins)  = 0.6

So a 0.6 of the movie is left.

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