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Three pounds of raisins and 4 pounds of corn flakes...

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Three pounds of raisins and 4 pounds of corn flakes...

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Three pounds of raisins and 4 pounds of corn flakes are used to make a large bag of breakfast cereal. Raisins cost $1.11 per pound and flakes cost $0.90 per pound. What most the grocer charge for a pound of the cereal to make a profit of 21 cents per pound?

A. $0.99
B. $1.00
C. $1.07
D. $1.20
E. $1.21

The OA is D.

Please, can any expert explain this PS question for me? I tried to solve it but I can't get the correct answer. I need your help. Thanks.

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swerve wrote:
Three pounds of raisins and 4 pounds of corn flakes are used to make a large bag of breakfast cereal. Raisins cost $1.11 per pound and flakes cost $0.90 per pound. What most the grocer charge for a pound of the cereal to make a profit of 21 cents per pound?

A. $0.99
B. $1.00
C. $1.07
D. $1.20
E. $1.21

The OA is D.

Please, can any expert explain this PS question for me? I tried to solve it but I can't get the correct answer. I need your help. Thanks.
Cost of three pounds of raisins: 3 * 1.11 = 3.33
Cost of four pounds of cornflakes: 4 * .90 . = 3.60
Total cost of 7 pounds of cereal = 3.33 + 3.60 = 6.93
Cost per pound = 6.93/7 = .$99

To make a profit of $.21, they'd have to charge .99 + .21 = $1.20. The answer is D

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