Question

The total cost of 5 computer s and 3 printers is 7100dollars . The total cost of 4 such computers and 3 printers is 5920 dollars . Find cost of printer

Answer 1

Answer:

let Computer be x and printer be y

according to the question

5x+3y=7100...... equation 1

4x+3y=5920......equation 2

from equation 1 and equation 2

5x+3y-(4x+3y)=7100-5920

5x-4x+3y-3y=1180

x=1180 dollars

cost of one computer is 1180 dollars

from equation 2

4x+3y=5920

4(1180)+3y=5920

4,720+3y=5920

3y=5920-4720

3y=1200

y=400 dollars

therefore, cost of printer is 400 dollars

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