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14 August, 22:05

2r + 2s = 50 and 2r - s = 17.

A. r = 3, s = 11

B. r = - 8, s = 33

C. r = 14, s = 11

D. r = 25, s = 33

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Answers (1)
  1. 14 August, 22:07
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    Option C

    Step-by-step explanation:

    2r+2s=50

    2r-s=17

    subtract both the equations

    you'll get

    3s=33

    divide 3 on both sides

    s=11

    substitute s=11 in any of the 2 equations

    2r-s=17

    2r-11=17

    add 11 both sides

    2r=28

    divide 2 both sides

    r=14
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