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Svetllana [295]
3 years ago
12

Giuliana has 22 quarters and dollar coins worth a total of $10.75.Which equation can be used to find d, the number of dollar coi

ns Giuliana has?
Mathematics
2 answers:
Ganezh [65]3 years ago
7 0
0.25(22 - d)+d=10.75
Burka [1]3 years ago
4 0

Answer:

(22-d)× 0.25  + d = 10.75 equation that can be used to find d, the number of dollar coins Giuliana has.

Step-by-step explanation:

Given :  Giuliana has 22 quarters and dollar coins worth a total of $10.75

We have to find an equation that can be used to find d, the number of dollar coins Giuliana has.

Let he has d dollar coins then number of quarter coins is (22-d)

We know 1 quarter = 0.25 dollars

then (22-d) quarter = (22-d)× 0.25 dollars =  $5.5 - 0.25d

Thus,

The equation becomes,

(22-d)× 0.25  + d = 10.75.

That is  $5.5 - 0.25d + $d = $ 10.75.

thus, 0.75d = $ 10.75 - $5.5

On solving d = 7

Thus,  (22-d)× 0.25  + d = 10.75 equation that can be used to find d, the number of dollar coins Giuliana has.

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