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Mariana [72]
3 years ago
15

In 2 days 20 hours a watch gains 20 seconds find how much time the watch will take to gain 35 seconds ??

Mathematics
2 answers:
Digiron [165]3 years ago
5 0
It should take the watch 119 hours or 4 hours and 23 hours. You can find this through proportions. 2 days and 20 hours are equal to 68 hours. So if the watch takes 68 hours to gain 20 seconds, then it takes about 3.4 hours to gain a second. Multiply 3.4 by 35 to find that it takes exactly 119 hours.
tester [92]3 years ago
3 0
<u>→ Chapter : Ratio ←</u>
<u><em>≡ We know that:</em></u>
⇔ 2 days 20 hours = 68 hours → Gain 20 seconds
⇔ N → Gain 35 seconds

<u><em>≡ Solution:</em></u>
⇒ \frac{68}{N}=\frac{20}{35}
⇒ N=\frac{(68).(35)}{20}
⇒ N=\boxed{119}Hours=\boxed{4}Days\boxed{23}Hours

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