Marc sold 442 tickets. Sds.=$3, Ads.=$4. Sales totaled to $1540. many sds. and ads did he sell?

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Marc sold 442 tickets. Sds.=$3, Ads.=$4. Sales totaled to $1540. many sds. and ads did he sell?

2007-03-27 09:54:01 · 4 answers · asked by The Next Idol 1 in Education & Reference ➔ Homework Help

4 answers

x = sds
y = ads

x + y = 442
3x + 4y = 1540

-3x - 3y = -1326
3x + 4y = 1540
y = 214

x + 214 = 442

x = 228

so, 228 sds, and 214 ads

2007-03-27 09:58:46 · answer #1 · answered by crzywriter 5 · 0⤊ 0⤋

214 Ads and 228 Sds

2007-03-27 16:59:57 · answer #2 · answered by pinkyme 1 · 0⤊ 0⤋

you need 2 equations since you have 2 unknowns.
the first is for the # of tickets sold: (s = students, a = adults)
s+a=442
the second one is for $$ of tickets sold
3s+4a=1540.
solve the first one for either a or s, and plug that in for a or s in the second equation and solve!

2007-03-27 16:58:51 · answer #3 · answered by stitchfan85 6 · 0⤊ 0⤋

220

2007-03-27 16:56:19 · answer #4 · answered by huckypeep2 5 · 0⤊ 0⤋