John is 3 years older than Susan and khalid is 5 years younger than her . The sum of their ages is 40 . Find their ages. ​

Question

John is 3 years older than Susan and khalid is 5 years younger than her . The sum of their ages is 40 .
Find their ages.
​

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Yến Oanh 4 years 2021-08-27T23:25:36+00:00 1 Answers 16 views 0

Answers ( )

  1. ngochoa
    0
    2021-08-27T23:26:48+00:00
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    Answer:

    John is 17,

    Susan is 14,

    and Khalid is 9.

    Step-by-step explanation:

    a = John’s age

    b = Susan’s age

    c = Khalid’s age

    Let’s set our rules from the given information.

    a = b + 3

    c = b – 5

    a + b + c = 40

    Now, we can solve for b through substitution.

    (b + 3) + b + (b – 5) = 40

    3b – 2 = 40

    3b = 42

    b = 14

    So, now that we have Susan’s age, we can follow the rules and see if it holds.

    17 + 14 + 9 = 40 Viola!

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