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Melissa and her children went into a grocery store and she bought $7 worth of bananas and peaches. Each banana costs $0.40 and each peach costs $0.50. She bought a total of 15 bananas and peaches altogether. Determine the number of bananas and the number of peaches that Melissa bought.

 Jun 28, 2020
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Let x be the number of bananas bought. Then the number of peaches bought is 15-x.

We form an equation.

 

0.4x+0.5(15-x)=7

0.4x+7.5-0.5x=7

-0.1x=-0.5

x=5

 

She bought 5 bananas and the 15-x=15-5=10 peaches.

 Jun 28, 2020

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