A factory has 3 machines capable of producing cogs. All 3 machines together can produce 460 cogs per hour. Machine A and machine B together produce 360 cogs per hour, while machine A and machine C together can produce 310 cogs per hour. How many cogs per hour can machine A produce?
2007-09-14 10:21:53 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
DYOHW.......
You already said it........
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2007-09-14 10:28:30 · answer #1 · answered by muddypuppyuk 5 · 0⤊ 1⤋
A + B + C = 460
A + B = 360 so C = 100
A + C = 310
so A = 210
2007-09-14 10:28:03 · answer #2 · answered by Beardo 7 · 0⤊ 2⤋
A+B=360
A+C=310
A+B+C=460
-A-B= -360
A+B+C=460
C=100
A+C=310
A=210
210+B+100=460
B=150
A=210
A little redundant, but you get the idea.
2007-09-14 10:29:22 · answer #3 · answered by Norm B 3 · 0⤊ 1⤋