Posted by justin on Friday, April 16, 2010 at 1:24am.
this year Ben is 4/7 as old Glen. Fifteen years fromnow Ben will be 3/4 as old as Glen. At that time he sum of thier ages will be 63. How old are Ben and Glen now?

math  Reiny, Friday, April 16, 2010 at 8:23am
You have more information than is needed
let Glen's present age be x
then Ben's present age is 4x/7
in 15 years:
Glen will be x+15
Ben will be 4x/7 + 15
We are told
x+15 + 4x/7+15 = 63
7x + 105 + 4x + 105 = 441
11x = 441  210
11x = 231
x = 21
So Glen is now 21 and Ben is now 12
The fact that "Fifteen years fromnow Ben will be 3/4 as old as Glen" was not needed, but confirms our answer.
Answer This Question
Related Questions
 math  This year Ben is 4/7 as old as Glen. Fifteen years from now, Ben will be...
 Math  the sum of the ages of rex, ben and alfred is 36 years, two years ago, ...
 Math  the sum of the ages of rex, ben and alfred is 36 years, two years ago, ...
 math  the sum of the ages of kristen and ben is 32 four years ago kristen was ...
 math  abel is 3 times as old as ben.3 year ago abel is 4 times as old as ben. ...
 Math  Vic and Ben's ages are in the ratio of 3:4. If Vic is 12 years old and 3 ...
 math  in 5 years art will be twice as old as ben. 5 years ago art was 3 times ...
 math  ben and glen are practicing short golf shots. they are aiming for a flag ...
 MATH  RAQUEL IS NOW 3YRS OLDER THAN BEN.IN 5 YRS,THE SUM OF THEIR AGES WILL BE ...
 Math  A major corporation is building a 4325 acre complex of homes, offices, ...
More Related Questions