Solve using proportions: If a 4-pound roast takes 140 minutes to cook, how long should a 5-pound roast take to cook?

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asked Jun 15, 2023 140k views

2 votes

Solve using proportions: If a 4-pound roast takes 140 minutes to cook, how long should a 5-pound roast take to cook?

Mathematics
high-school

Alois asked

by Alois

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2 Answers

3 votes

Explanation:

$4pound \: roast \: = 140 \: minutes \\ 5 \: pounds \: roast \: = {?} \\ then cross multiplication \\ 140 * 5 \: divide \: by \: 4 \\ 700 / 4 = 175 \\ 5 \: pound \: roast \: take \: 175 \: minutes$

Brian Beckett answered Jun 17, 2023

by Brian Beckett

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5 votes

175 minutes because 140/4 is 35 mins so 35 mins per pound so then 35x5

Noisygecko answered Jun 21, 2023

by Noisygecko

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