SOLUTION: Bob is 5 years younger than twice marks age. Bob is 31.How old is Mark?

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Question 963363: Bob is 5 years younger than twice marks age. Bob is 31.How old is Mark?
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
M=Mark's age; B=Bob's age=2M-5yrs=31yrs
2M-5yrs=31yrs Add 5 yrs to each side.
2M=36 yrs
M=18 yrs ANSWER: Mark is 18 years old.