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faltersainse [42]
2 years ago
9

Trey runs 3 miles in 25 minutes. At the same rate, how many miles would he run in 20 minutes?

Mathematics
2 answers:
aalyn [17]2 years ago
4 0

Answer:

Step-by-step explanation:

Set up a proportion.

3/25 = x / 20      Notice that both times are in the denominators. Be sure you always set up a proportion that way. Like units in the denominator. Like units in the numerator.

Cross multiply

3 * 20 = 25 * x                        Combine

60 = 25x                                 Divide by 25

60/25 = x

x = 2.4 miles in 20 minutes.

stepan [7]2 years ago
4 0

Answer:

In 20 minutes, Trey would run 2.4 miles.

Step-by-step explanation:

20x = 25

x = 4/5

This means we multiply the number by 0.8

3 * 0.8 =

3/25 = 2.4/20

2.4 miles / 20 minutes

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uysha [10]
Let Mary's age be x.

Paul is three times as old as Mary, so Paul's age would be 3x.

Peter is four times as old as Mary, so Peter's age would be 4x.

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