# How much did each sell if Nancys sales last week were $140 less than three times Andrea's sales and together they sold$940.

How much did each sell if Nancys sales last week were $140 less than three times Andrea's sales and together they sold$940.
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garnboernl
First, we write the two equations given.
"Nancy's sales last week were $140 less than three times Andrea's sales" We write this as: N=3A−140 "together they sold$940."
We write this as:
N+A=940
Solve for A:
A=940−N
Substitute A into first equation:
N=3(940−N)−140
Distribute:
N=2820−3N−140
4N=2680
Solve for N:
N=670
Plug N into second equation:
670+A=940
Solve for A:
A=270