After school, Chase spends 20 min reading, 30 min practicing the piano, 15 min cleaning his room, and 40 min doing his homework. Chase is busy for 105 min.What fraction of the time does he spends cleaning his room?
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To find the fraction of time Chase spends cleaning his room, we first need to add up the total time he spends on all activities.
20 min (reading) + 30 min (practicing piano) + 15 min (cleaning room) + 40 min (doing homework) = 105 min
Now, we can find the fraction of time he spends cleaning his room by dividing the time he spends cleaning his room by the total time.
Cleaning room time / Total time = 15 min / 105 min
To simplify the fraction, we can divide both the numerator and the denominator by their greatest common divisor, which is 15 in this case.
15 ÷ 15 = 1
105 ÷ 15 = 7
So, the fraction of time Chase spends cleaning his room is 1/7.