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22 June, 17:02

The sum of twice a number and a larger number is 145. The difference between the numbers is 55. Let x represent the smaller number and y represent the larger number. Which equations represent the situation? Check all that apply.

A. x-y=55

B. 2 (x+y) = 145

C. 2x+y=145

D. y-x=55

E. y=x+55

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Answers (2)
  1. 22 June, 17:11
    0
    X and y are the numbers

    y>x

    sum (addition) of twice a number (2x) and larger number (y) is (=) 145

    2x+y=145

    difference between them is 55 (y is bigger so it would be x is subtracted from y)

    y-x=55

    so the equations are

    2x+y=145 and

    y-x=55

    we could add x to both sides in the 2nd equation to obtain

    y=x+55, but that doesn't really represent that the difference is 55, though they are the same euation

    so I would say C and D only
  2. 22 June, 18:14
    0
    C, D, and E all represent parts of the situation.

    A does not, because x is actually 55 smaller than y, which is why both D and E work.

    B does not because it's doubling the sum of x = y, but the description says to double x and then add y (which is why C works).
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