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Can you please help me with this

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Explain how a system of equations can

be used to find a flat fee and a perĀ­unit rate.

Jan 13th, 2015


X is the flat fee and Y is per unit rate

lets assume X is your fixed pay, and Y is the overtime amount you get per hour,

so, if a equation say that on working 3 hours extra, earning was 130 and
on working 5 hours extra the earning was 150.

so, the equations will be...

X + 3Y =130
X +5y = 150

if you solve these by elimiantion,

X+3Y - (X+5Y) = 130-150
or, X-X +3Y - 5Y = -20
or, -2Y =-20
or, Y=10

and X+3*10=130
or, X=130-30 = 100

so, the fixed pay is 100 and 10 is per unit rate.

Hope this helps. Please best my answer and message me if you have any doubts :)

Jan 13th, 2015

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