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 coins giuliana has?

(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.