Saturday

December 20, 2014

December 20, 2014

Posted by **John** on Sunday, July 14, 2013 at 10:42am.

2. Joel is one third the age of Bob. In 7 years the combined ages of the boys will be 58. How old is each boy now?

3. Tom is three times as old as Leigh Ann. In 7 years, the sum of half of Tom's present age and a third of Leigh Ann's age will be the same as Tom's age now. How old will Tom be in 7 years?

- math -
**mahesh**, Monday, July 15, 2013 at 5:29amLet it be x yrs ago, when Lisa was 15-x and her father was 40-x. Then-

40-x=6(15-x) or 40-x=90-6x

Or 6x-x=90-40 or 5x=50 thus x=5.

Let Bob be x yrs and Joel be 3x. Then (x+7)+(3x+7)=58 or 4x+14=85

Or 4x=44 hence x=11. Thus Bob is 11 and Joel is 33. After 7 yrs Bob willbe 18 and Joel will be 40. 18+40=58 OK.

Let Leigh be x and Tom be 3x at present. After 7 yrs, Leigh will be x+7 and Tom will be 3x+7. Then,

(x+7)/2 + (3x+7)/3=3x

Or 2x+14+9x+21=3x

Or, 7x=21+14=35 or x=5. Tom is 15.

Check: After 7 yrs Leigh will be 12 and Tom will be 22.

12/3 + 22/2=4+11=15. OK.

**Answer this Question**

**Related Questions**

math - A. Lisa is 15 years old and her father is 40. How many years ago was the ...

math - A. A woman was 30 years old when her daughter was born.Her age is now 6 ...

algebra - Im feeling like an old parent. Please help. Charles is one-third as ...

Kathie - In four years' time, a father will be three times as old as his son. ...

math - amamda is 12 years old. she is 2/7 times as old as her father. how many ...

MATH - 1. A father is three times as old as his son. Five years ago the sum of ...

math - Lisa and her father stand next to each other on a sunny day. Lisa is 130 ...

Math - Paul is 12. His father is 33. How many years ago was the father 4 times ...

Math - Ten years ago a man was three times as old as his son. In twelve more ...

math !!!! :O - Amanda is 12 years old. She is 2/7 times as old as her father. ...