Word Age Problem NEED HELP

Mr. Lin is four times as old as his daughter. The sum of their ages is twelve years less than twice the difference of their ages. How old is Mr. Lin?

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Can someone please explain how to do this problem a.s.a.p? Thanks

We don't really do "ASAP". We have volunteers. If you want ASAP, you may wish to consider more expensive options.

Name Thnigs!!!!

M = Mr. Lin's Age
D = Daughter's Age

Now translate.

"Mr. Lin is four times as old as his daughter"

M = 4*D

"The sum of their ages is twelve years less than twice the difference of their age"

Sum of their ages: M+D
Difference of their Ages: M-D
Twice the Difference fo their Ages: 2(M-D)
12 less than Twice the Difference fo their Ages: 2(M-D)-12

M + D = 2*(M-D) - 12

We have assumed M > D, which is reasonable for a Father-Daughter relationship.

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