Question

A movie was 3 1/2 hours long. If Lily turned the movie off 1/4 of the way through, how much time did she spend watching it?
answer options:
1/14 of an hour
7/8 of an hour
1 1/7 of an hour
14 hours

Answer 1

Answer:7/8 of an hour

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Step-by-step explanation:

We multiply the total of the movie, 3 1/2 hours, by the fraction she watched, 1/4:

1/4(3 1/2)

To multiply these, we convert the mixed number to an improper fraction.  We multiply the whole number, 3, by the denominator, 2; this gives us 6.  We add the numerator, 1; this gives us 7.  This makes it 7/2:

1/4(7/2)

To multiply fractions, we multiply straight across:

(1*7)/(4*2) = 7/8

Answer 2

Answer:

7/8 of an hour is your answer