SOLUTION: The sum of ages of Mr tan and his son david is 61 years. Tbe difference in their ages is 29.How old is david? How old will Mr Tan be when david is 21 years old

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Question 1115396: The sum of ages of Mr tan and his son david is 61 years. Tbe difference in their ages is 29.How old is david? How old will Mr Tan be when david is 21 years old
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
t,d
Mr. Tan, David

system%28t%2Bd=61%2Ct-d=29%29

Their current ages:
system%28t=45%2Cd=16%29


David will be 21 years old, in 5 more years. When that happens, Mr. Tan will be 50 years old.

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

The sum of ages of Mr tan and his son david is 61 years. Tbe difference in their ages is 29.How old is david? How old will Mr Tan be when david is 21 years old
If the difference in ages is 29, then it will ALWAYS be that, presumably. Therefore, when David is 21, his father must be 29 + 21 = 50.

So, so SIMPLE!! Nothing COMPLEX!