B. The Randolphs used 12 more gal of fuel oil in oct. than in sept. and twice as much oil in nov. as in sept. if they used 132 gal for the 3 months how much was used during each month?
2007-04-27 12:03:18 · 10 answers · asked by Chris C 1 in Education & Reference ➔ Homework Help
first one washer = $360 dryer= $290
oct= 42
sept.= 30
nov.= 60
please pick me
2007-04-27 12:23:03 · answer #1 · answered by trujillotothemax 3 · 0⤊ 0⤋
You do those problems by dividing the initial cost in two, then find half of what the difference is supposed to be. Subtract from one and add to the other.
650/2= 325
70/2=35
325+35= 360
325-35= 290
360-290=70
Dryer is 290 and Washer is 360
B. You want to start by finding an average for the three. It is 44gallons. But you can't do it like the problem above, because if you divide 12 by two and add it to oct and subtract from september, november is too big. (the total ends up being too much.) So then you just have to play around with the estimated numbers making sure 2S=N and S+12=o.
Sept= 30
Oct= 42
Nov=60
2007-04-27 13:02:34 · answer #2 · answered by Tee 2 · 0⤊ 0⤋
A: divide 650 by two. this makes two sets of $325. the washer and dryer.
divide the difference between the washer and dryer by two. 70/2=35.
you have 325 and 325. add 35 to one side and subtract 35 from the other. this gives you 360 and 290. that is the price of the washer and dryer.
gets a little more difficult in b, but its almost the same thing. i dont feel like typing it all out.
october is 42
september is 30
november is 60
2007-04-27 12:23:10 · answer #3 · answered by carl 2 · 0⤊ 0⤋
A. Dryer-$290 Washer-$360
B. 30 gallons in September, 42 gallons in October, 60 gallons in November
2007-04-27 12:19:00 · answer #4 · answered by Anonymous · 1⤊ 0⤋
650 - 70 + 580
580/2 = 290
290 + 70 = 360
answer is 290 and 360
2007-04-27 12:24:02 · answer #5 · answered by Mr.Archie G 2 · 0⤊ 0⤋
washer 360
dryer 290.
x + y = 650
x + (x + 70) = 650
2007-04-27 12:14:24 · answer #6 · answered by triplehelix 1 · 0⤊ 0⤋
washer=x+70
dryer=x
2x+70=650
2x=70-70=650-70
2x=580
x=290
washer=360
dryer 290
360+290=650
September =x
October x+12
November 2x
4x+12=132
4x+12-12=132-12
4x=120
x=30
September 30
October 42
November 60
30+42+60=132
2007-04-27 12:45:15 · answer #7 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
650-70=580
580/2=290
290+70=360
washer is $360 and dryer is $290
don't really want to spend the time answering B
sorry
2007-04-27 15:14:02 · answer #8 · answered by Froggy 3 · 0⤊ 0⤋
washer $360 dryer 250
sept 30 gal, oct 42 gal, nov 60 gal
2007-04-27 12:13:10 · answer #9 · answered by bill l 2 · 0⤊ 2⤋
washer - $395
dryer - $245
dunno about the 2nd one!â¥
2007-04-27 12:50:28 · answer #10 · answered by badrabbit108 3 · 0⤊ 0⤋