The amount of water used to wash clothes is directly proportional to the amount of time that the washer is in use. A wash lasting 24 minutes requires 12 gallons of water. Find the amount of water used in a washing clothes lasting 10 minutes.
2007-09-28 06:50:44 · 5 answers · asked by mouser 1 in Science & Mathematics ➔ Mathematics
let W be amt of water used
n T be d time d washer iz in use.
so , d equation iz W=kT where k iz a constant
putin W =12 &T =24 we get d value of k=.5
so whn T =10,W =10*.5= 5 galons
2007-09-28 07:01:59 · answer #1 · answered by aryan v 2 · 0⤊ 0⤋
Isn't it the size of the load that determines the amount of water used not the washing time? I would think it would be 12 gal.
2007-09-28 14:02:18 · answer #2 · answered by LiveLaughLove 3 · 0⤊ 0⤋
directly proportional...
12 / 24 = # gallons / minute = 1/2
so,
10 minute * 1/2 gallons / minute = 5 gallons
(cancel the min. & /min.)
2007-09-28 13:59:26 · answer #3 · answered by V C 2 · 0⤊ 0⤋
12 multilied by 10 and divided by 24 = 5 litres
2007-09-28 13:55:20 · answer #4 · answered by Swamy 7 · 0⤊ 0⤋
"directly proportional"....
24:12
10:5
2007-09-28 13:58:34 · answer #5 · answered by meanolmaw 7 · 0⤊ 0⤋