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Rus_ich [418]
3 years ago
5

2. Jack ran 5 miles in 42.5 minutes. Jill ran 3 miles in 23.25 minutes. Who ran faster? How do you know?

Mathematics
2 answers:
Pavlova-9 [17]3 years ago
5 0

Jill ran faster.  I know because I compared both of their unit rates.

Jack's unit rate is  5/42.5 = 0.118 mile per minute (rounded)

Jill's unit rate is  3/23.25 = 0.129 mile per minute (rounded)

Jill runs a greater part of a mile per minute than Jack does.
She is faster.  There's no getting around it.

mart [117]3 years ago
3 0
Jack: 42.5 ÷ 5 = 8.5
Which means Jack runs 1 mile in 8.5 minutes

jill: 23.25 ÷ 3 = 7.75
Which means Jill runs 1 mile in 7.75 minutes

Jill is faster
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