The price e of an entertainment system at extreme electronics

Asked by maham237 @ in Mathematics viewed by 403 People

is $220 less than twice the price, u, of the same system at Ultra Electronics. The difference in price between the system at Extreme Electronics and Ultra Electronics is $175. Which system of linear equations can be used to determine the price of the system at each store?

Answered by maham237 @


let

e=the price of an entertainment system at Extreme Electronics

u=the price of an entertainment system at Ultra Electronics


We know that

e=2*u-220-------> equation 1

e-u=175---------> equation 2


substitute equation 1 in equation 2

{2*u-220}-u=175--------> u=175+220-------->u=$395

e=2*395-220------->e=$570


therefore


the answer is

the system of linear equations is

e=2*u-220-------> equation 1

e-u=175---------> equation 2

e=$570

u=$395


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