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

Question

3 years ago

12

ns Giuliana has?

2 answers:

Ganezh [65] · Answer 1 · 2022-06-22T14:45:02+03:00

7 0

0.25(22 - d)+d=10.75

Burka [1] · Answer 2 · 2022-06-22T16:22:36+03:00

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.