Question 375609
$10 for each scientific calculator. ------------ x numbers
graphing calculators, cost $52 each.------------ y numbers
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total = 45 calculators
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value = $1626
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x+y =45
10x+52y=1626
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multiply first equation by -10
-10x-10y=-450
add to second equation
52y-10y=1626-450
42y=1176
/42
y = 1176/42
y= 28 graphing calculators
balance 17 = scientific calculators
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m.ananth@hotmail.ca