SOLUTION: Armando works part-time at a pet store. This week he earned $18 less than 4 times the amount he earned last week. His total earnings for the two weeks were $262. How much did he ea

Algebra ->  Expressions -> SOLUTION: Armando works part-time at a pet store. This week he earned $18 less than 4 times the amount he earned last week. His total earnings for the two weeks were $262. How much did he ea      Log On


   

Question 669385: Armando works part-time at a pet store. This week he earned $18 less than 4 times the amount he earned last week. His total earnings for the two weeks were $262. How much did he earn this week?
Found 2 solutions by mananth, stanbon:
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
last week the earning was -X
this week the earning was4x-18
Together the earning was x+4x-18
5x-18=262
5x=262+18
5x=280
x=280/5
x=56
This week he earned 4x-18---> 4(56)-18=
206
$206 this week

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Armando works part-time at a pet store. This week he earned $18 less than 4 times the amount he earned last week. His total earnings for the two weeks were $262. How much did he earn this week?
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Let his earnings this week be "x".
Let his earnings last week be "y".
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Equations:
x = 4y-18
x + y = 262
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Substitute for "x" and solve for "y":
4y-18 + y = 262
5y = 280
y = $56 (last week earnings)
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Solve for "x":
x + y = 262
x + 56 = 262
x = $206 (this week earnings)
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Cheers,
Stan H.