SOLUTION: Mike is four years older than his brother,Andrew. If five times Andrews age is equal to three times mikes age,how old is mike

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Question 1025201: Mike is four years older than his brother,Andrew. If five times Andrews age is equal to three times mikes age,how old is mike
Answer by addingup(3677) About Me  (Show Source):
You can put this solution on YOUR website!
M = A+4
3M = 5A and since we just said that M = A+4, substitute for M:
3(A+4) = 5A
3A+12 = 5A Subtract 12 and 5A on both sides:
-2A = -12 Divide both sides by -2 and remember -/- = +
A = 6 Andrew is 6
M = A+4 = 6+4 = 10 Mike is 10