Posted by **kia** on Thursday, January 25, 2007 at 9:39pm.

if i am 3 times as old as my sister and last year i was 4 times as old as her how old am i now and how old is she

well how old is your sister

You are 9 and she is 3 (3x3=9)

Last year you were 8 and she was 2

(2x4=8)

your sister is 3 and you are 9

let x = sister's age

and y = your age.

================

last year sister's age was x-1.

last year your age was y-1.

y = 3x for this year.

y-1 = 4(x-1) for last year.

solve for x and y.

The answers above are correct but this tells you how to do it.

## Answer this Question

## Related Questions

- 4th grade math - Rodney is three times as old as his sister. Ayear ago he was ...
- math - Rodney is 3 times as old as his sister. A year ago, he was 4 times as old...
- Algebra II - Sue is three times as old as her sister. In one year from now, ...
- math - laura is half as old as kevin. five years ago he was 3 times as old as ...
- math - A. John is now 10 years older than Marcus. Three times John's age 5 years...
- math - i never can do word problems....please help... i got 7 of them.....these ...
- 9th grade math word problems - i never can do word problems....please help... i ...
- BrainMath - Hector is 12 years old now. In 4 years he will be twice as old as ...
- Health/ Basic Clinical Procedures - please check mey answer thanks which of the ...
- Maths - Greg and Martin's age when added together come to a total of 60 years. ...

More Related Questions