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barxatty [35]
3 years ago
9

Please help!! Andy is 2 year older than jeff. in 5 years the sum of their ages will be 40 years . find their ages now .... provi

de a complete algebraic solution
Mathematics
1 answer:
ANTONII [103]3 years ago
8 0
Andy's age            = x
Jeff's age              = x-2
Andy's age in five years            = x+5
Jeff's age in five years              = x-2+5
The sum of their ages in five years        = x+5 + x-2+5

                                       x + 5 + x - 2 + 5 = 40
                                         2x + 8 = 40
                                         <u>    -8        -8</u>
                                              2x = 32
                                             <u> :2      :2</u>
                                               x = 16
x - 2 = 14

<u>Andy is 16 years old and Jeff is 14 years old</u>
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Step-by-step explanation:

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At the same way, we can write the sentence: "the rate at which material is forgotten is proportional to the amount memorized" as:

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