Ricky Wiryopranoto's answer to .'s Primary 6 Maths Algebra Singapore question.
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a) mother age = 4k-3
b) father future age = 4k + y
Where y is number of years in the future
John future age = k+ y
2 x john future age = father future age
2 x (k + y) = 4k + y
2k + 2y = 4k + y
y = 2k
b) father future age = 4k + y
Where y is number of years in the future
John future age = k+ y
2 x john future age = father future age
2 x (k + y) = 4k + y
2k + 2y = 4k + y
y = 2k
Date Posted:
4 years ago
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