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27 December, 14:08

If y varies directly as x, and y=8 when x=5, find y when x=10

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  1. 27 December, 14:35
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    You have to set it up as a ratio 8/5 = y/10, then you have to cross mutliply and divide. So 8*10=80 and 80/5 = 16 so y=16.
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