yourmomjeff21 yourmomjeff21

01-04-2016
Mathematics

contestada

John is 6 years older than Keisha. Together their ages equal four times Keisha's age. How old is each?

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bookishfairy73 bookishfairy73

01-04-2016

J = K+6
K + J = 4K

Replace J in the second equation
K + (K + 6) = 4K
K + K + 6 = 4K
2K + 6 = 4K
Subtract 2K from each side
6 = 2K
Divide both sides by 2
K=3

So, Keisha is 3 and therefore John is 9 because 3 + 6=9

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MisfitAnimeDiva MisfitAnimeDiva

01-04-2016

John is 9
Keisha is 3
use variable for the problem

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