Posted by **koori** on Tuesday, January 27, 2009 at 9:54pm.

can someone help me solve this? not just an answer but a method of solving cause im having a hard time grasping this.

Three times the larger of two numbers is equal to four times the smaller. The sum of the numbers is 21. Find the numbers.

- math word problem -
**haz**, Tuesday, January 27, 2009 at 9:56pm
3xy = 4y

x+y = 21

let x equal the larger number

let y equal the smaller number

ok..

take it step by step. u first divide 4y on both sides. if that doesn't work, just plug numbers in. hope this helps! please answer my question! thanks.

XOXO

Hazel

- math word problem -
**PsyDAG**, Wednesday, January 28, 2009 at 12:53pm
Three times the larger of two numbers is equal to four times the smaller. Let x equal the larger number, and

let y equal the smaller number.

3x = 4y or dividing both sides by 4, y = 3/4x

The sum of the numbers is 21.

x + y = 21

Substitute 3/4x for y in the second equation. and solve for x. Put that value into the first equation to find y. Check by putting both values into the second equation.

I hope this helps a little more. Thanks for asking.

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