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Ming used the calculations shown to find out how much he would spend on 6 pounds of ground beef if 10 pounds of ground beef cost $25.00. StartFraction 10 pounds over 25 dollars EndFraction = StartFraction 10 pounds divided by 25 over 25 dollars divided by 25 EndFraction = StartFraction 0.4 over 1 EndFraction. Unit Price = 40 cents. 40 cents times 6 = 2 dollars and 40 cents. What was Ming's error? He determined pounds per dollar by dividing 10 by 25 but wrote the unit rate as a dollar value. He divided the numerator and the denominator of the fraction by 25. He made a mistake when finding the quotient of 10 pounds and 25 dollars. He made a mistake when finding the product of $0.40 and 6.

2 Answers

2 votes

Answer:

d

Explanation:

User Faegy
by
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1 vote

Answer:

He determined pounds per dollar by dividing 10 by 25 but wrote the unit rate as a dollar value.

Explanation:

Given


(10\ pounds)/(\$25) = (10\ pounds)/(25) / (\$25)/(25) = (0.4)/(1)


Unit\ Price = 40\ cents


40\ cents * 6 = \$2.40

Required

Determine Ming's error

Ming's error is from here


(10\ pounds)/(\$25) = (10\ pounds)/(25) / (\$25)/(25) = (0.4)/(1)

He calculated the unit rate as pound per dollar.

So, after calculating the unit rate, the unit should be:


Unit\ Rate = 0.4\ pound/\$

But instead, he solved as:


Unit\ Rate = \$0.4/ pound

Hence, (a) is correct

User Sameer Sawla
by
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