Toya can run one lap of the track in 1 min. 3 sec., which is 90% of her younger sister niki's time. what is niki's time for one lap?

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25-01-2018
Mathematics

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Toya can run one lap of the track in 1 min. 3 sec., which is 90% of her younger sister niki's time. what is niki's time for one lap?

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VivaciousLyla VivaciousLyla · Answer 1 · 2018-01-25T01:05:30+01:00

VivaciousLyla VivaciousLyla

25-01-2018

Hello!

1 minute 3 seconds = 63 seconds

We must found out 63 is 90% of what number, using the percentage formula:

90 * 100 / 63 = 70

70 seconds = 1 minute 10 seconds

So, Niki's time for one lap is 1 minute 10 seconds (70 seconds).

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