The ratio of an objects weight on earth to its weight on Neptune is 5:7. How much would a person who weighs 150 pounds on earth weigh on Neptune?
2006-11-02 15:31:37 · 6 answers · asked by Anonymous in Education & Reference ➔ Homework Help
First, you set up the ratios.
The Earth/Neptune weight ratio is 5:7.
You know the weight of someone on Earth (150 pounds), but you don't know the weight on Neptune. We'll call this x.
You set up the ratio as such:
5/7 = 150/x
Solve for x by cross-multiplying:
5x = 150*7
x = 210
So, the person would weigh 210 pounds on Neptune.
2006-11-02 15:39:18 · answer #1 · answered by Rev Kev 5 · 0⤊ 0⤋
yeah, 210 pounds
divide 150 by 5, that gives you 30.
since 5:7 means the same as 5x:7x , x being whatever number.
with the 30 that goes into 150 5 times, you can now have 5(30):(7(30)
150:210
2006-11-02 23:46:36 · answer #2 · answered by fuzzy_suncat 2 · 0⤊ 0⤋
Just in case you are interested this is how to figure ratios.If the ratio is 5:1 then divide 150 lbs by 5, then multiply by 7.
2006-11-02 23:40:45 · answer #3 · answered by Bob S 3 · 0⤊ 0⤋
5/7 = 150/x
Cross multiply. You've already seen the answer is 210.
2006-11-02 23:39:27 · answer #4 · answered by dmb 5 · 0⤊ 0⤋
210 pounds
2006-11-02 23:34:09 · answer #5 · answered by ladybird 3 · 0⤊ 0⤋
210lbs
2006-11-02 23:35:59 · answer #6 · answered by copman555 2 · 0⤊ 0⤋