SOLUTION: Please help! Two boys weighing 140 and 105lb, respectively, balance each other on a see-saw sitting 7 ft. apart. What is the distance of each from the pivot point? Thank You

Question 74219: Please help!
Two boys weighing 140 and 105lb, respectively, balance each other on a see-saw sitting 7 ft. apart. What is the distance of each from the pivot point?
Thank You!
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Let x=distance from 140 lb boy and y=distance from 105 lb boy
Set up a ratio between the distances and the weights
Multiply both sides by xy to get rid of the fraction
Here's the sum of the distances
Solve for y
plug this into x and solve

So the 140 pound boy is 4 ft away from the pivot.

So the 105 pound boy is 3 ft away.
RELATED QUESTIONS
Two boys weighing 100 and 150 lbs . respectively use a 15 ft plank for a teeter totter .... (answered by Earlsdon)

4 boys and 2 girls are sitting on a bench 1) what is the number of possible dispositions (answered by josmiceli)

4 boys and 2 girls are sitting on the bench 1) what is the number of possible... (answered by Edwin McCravy)

I need help on 5 questions on my math problems my teacher made up. Please help me solve... (answered by KMST)

Sit 5 boys and 7 girls in a row. What is the probability that either all boys or all the... (answered by jim_thompson5910)

Romeo and Juliet saw each other when they were 270 ft. apart. Romeo ran to Juliet at a... (answered by josmiceli)

The balance in a student's bank account is $1,200. Each month the student withdraws $140. (answered by josgarithmetic,greenestamps)

Two boys 11 km apart walk toward each other . If there rates are 4 kph and 5 kph... (answered by richwmiller)

Two children weighing 40 pounds and 50 pounds are at a teetertooter. The 50 pound child... (answered by KMST,jorel555)