# Algebra 1

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The Everton college store paid 1519 for an order of 41 calculators. The store paid 9 for each scientific calculator. The other, all graphic calculators cost the store 55 each. How many of each type of calculators was ordered?. Thank you

• Algebra 1 -

• Algebra 1 -

X Scientific cal.
Y Graphic cal.

Eq1: X + Y = 41.

Eq2: 9X + 55Y = 1519.
Multiply both sides of Eq1 by -9:
-9X - -9Y = -369,
9X + 55Y = 1519
46Y = 1150,
Y = 1150 / 46 = 25 Graphic cal.

X + 25 = 41,
X = 41 -25 = 16 Scientific cal.

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