cr8issalaJaniewhite cr8issalaJaniewhite

13-01-2017
Mathematics

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Katie is k years old. Harry is 4 years older than Katie. Rachel is twice as old as Harry. If you add together the ages of Katie, Harry, and Rachel the total comes to 36 years. Algebraically, determine the age of each person.

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PolymathAlpha1022 PolymathAlpha1022

13-01-2017

k+(k+4)+2k=36
4k+4=36
4k=36-4
4k=32
k=8

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