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Stolb23 [73]
3 years ago
7

a boy swims down stream at 0.9 miles in the same amount of time that he can swim 0.6 miles up stream. if the rate of the current

is 1.5 mph, how fast can he swim in the water?
Mathematics
1 answer:
AnnyKZ [126]3 years ago
3 0
Let s be the boy's swim speed. Then:
.9/s+1.5=.6/s-1.5
.6s+.9=.9s-1.35
.3s=2.25
s=7.5 mph as the boy's swimming speed
☺☺☺☺

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Subtract the following:

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Hint: Use decimal concept.

We know that, 1 rupee = 100 paise. We can reframe these questions as follows:

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18 rupees 9 paise can be represented as 18.09 rupees and 75 rupees 80 paise can be represented as 75.80 rupees. Now, on subtracting we’ll get,

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