Asked by kelvin

The age of Mwenda is 3/5 of that of his sister.If 20 years ago the age of Mwenda was 2/5 of that of his sister then. Find the present age of Mwend.

#Please guys help me this question#
Answered by Arora
Age of Mwenda = x
Age of Mwenda's sister = y

i) x = (3/5)*y
ii) (x - 20) = (2/5)*(y - 20)

Now, put 'x = (3/5)y' into the second equation.

=> ((3/5)*y - 20) = (2/5)*(y - 20)

Solve for y, then for x.
Answered by kelvin
Do the word "then" in sentence has no effect because then it means now i think on equation 2 how will it be or is like the way which you solved
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