SOLUTION: The ratio of the ages of Shahzad and Waseem is 2:5. After 8 years, their ages will be in the ratio of 1:2. The difference in their (in years) is?

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Question 964058: The ratio of the ages of Shahzad and Waseem is 2:5. After 8 years, their ages will be in the ratio of 1:2. The difference in their (in years) is?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
S%2FW=2%2F5
5S=2W
.
.
%28S%2B8%29%2F%28W%2B8%29=1%2F2
2%28S%2B8%29=W%2B8
Multiplying by 2,
4%28S%2B8%29=2W%2B16
Substituting from above,
4%28S%2B8%29=5S%2B16
4S%2B32=5S%2B16
-S=-16
S=16
Then,
5%2816%29=2W
W=40