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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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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?

User Alois
by
4.9k points

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

User Brian Beckett
by
3.7k points
5 votes
175 minutes because 140/4 is 35 mins so 35 mins per pound so then 35x5
User Noisygecko
by
4.1k points
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