math
posted by gary
A. John is now 10 years older than Marcus. Three times John's age 5 years from now will be the same as five times Marcus's age 5 years ago. How old is John now?
B. In 1 year Kristen will be four times as old as Danielle. Ten years from then Kristen will only be twice as old as Danielle. How old is Kristen now?
C. A woman was 30 years old when her daughter was born.Her age is now 6 years more than three times her daughter's age. How old will the daughter be in 5 years?

Anonymous
1. John is now 45 years old.
45 (John)  50 X 3 = 150
35 (Marcus)  30 X 5 = 150 
gary
thank you

Anonymous
john's present age is at least three times as great as his age 10 years ago. Find the greatest possible age of john at present

Rachel
A.
J=10 + M
3J +5=5M5
3(10+M)+5=5M5
30+3M+5=5M5
2M=40
M=20
J=10+M=30
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