SOLUTION: 3 years ago Juma was 3 times as old as Ali. In 2 yrs time the sum of their ages will be 62. Determine their present ages.

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Question 1067392: 3 years ago Juma was 3 times as old as Ali. In 2 yrs time the sum of their ages will be 62. Determine their present ages.
Answer by addingup(3677) About Me  (Show Source):
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J+2+A+2 = 62
J+A+4 = 62
J+A = 58
J = 58-A
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J-3 = 3(A-3) SUBSTITUTE FOR J
58-A-3 = 3A-9
55-A = 3A-9 Add A and 9 to both sides
64 = 4A
A = 16
Ali is 16 and Juma is:
J = 58-A = 58-16 = 42
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Check: In 2 years:
42+2+16+2 = 62
44+18 = 62 Correct
:
John