If tomatoes cost $1.70 per pound, and you paid $0.68, how many pounds did you purchase?
2006-09-01 13:57:36 · 6 answers · asked by twix 2 in Education & Reference ➔ Homework Help
divide the sixty-eight cents by the dollar-seventy and that's how many pounds.
2006-09-01 13:59:59 · answer #1 · answered by Paul 7 · 0⤊ 0⤋
The first answer is correct, and I'll tell you in detail why.
You will use an algebraic equation to solve. We know that it is $1.70 per pound, and we are trying to find out how much was purchased with $.68. So, you write your formula like this...
$1.70 / 1 lb = $0.68 / x lb (write these fractions top down, that is something OVER something)
You are trying to find x, the pounds you bought. And perhaps you are wondering how can those be equal? They are equal because they are equal ratios!
Anyway, once you have your equation, cross multiply. So you now have:
1.70x = 0.68 (leaving the units out so it's easier to see here)
x = 0.68 / 1.70
x = ?? (You should be able to find the answer now.)
And don't forget your units after you're done. :)
2006-09-01 14:49:06 · answer #2 · answered by LittleMuffin 3 · 0⤊ 0⤋
It goes like this:
let x be the weight of tomatoes you purchased.
$1.70 : 1lbs
$0.68 : x lbs
So to get x, cross multiply the ratios:
1.70 * x = 1 * 0.68
1.70 * x = 0.68
=> make x the subject of the equation
=> x = 0.68 / 1.70
x = 0.4lbs
2006-09-01 14:35:50 · answer #3 · answered by e.z p.z 2 · 0⤊ 0⤋
25 pounds. $1.70 divided by .68 equals 25
2006-09-01 14:17:39 · answer #4 · answered by Anonymous · 0⤊ 0⤋
0.68/1.70 = 0.4
So you bought 0.4 pounds of tomatoes.
2006-09-01 14:32:47 · answer #5 · answered by jubbablumberin 3 · 0⤊ 0⤋
wow what a hard question
2006-09-01 14:04:41 · answer #6 · answered by Anonymous · 0⤊ 1⤋