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3 years ago

A store has 125 scientific calculators.

Mathematics

1 answer:

aleksley [76]3 years ago

7 0

Answer:

Brand x: 80

Brand y: 45

Step-by-step explanation:

x + y = 125

20x + 15y = 2275

-20x - 20y = -2500

(+) 20x + 15y = 2275

--------------------------------

-5y = -225

y = 45

x + y = 125

x + 45 = 125

x = 80

Answer:

Brand x: 80

Brand y: 45

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