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Elden [556K]
3 years ago
5

Annette, Barb, and Carlita work in a clothing shop. One day the three had combined sales of $1480. Annette sold $120 more than B

arb. Barb and Carlita combined sold $280 more than Annette. Write and solve a linear system to find out how much did each person sold.
Mathematics
1 answer:
Nikitich [7]3 years ago
3 0

Answer:

The quantity sold by Annette was $600

The quantity sold by Barb was $480

The quantity sold by Carlita was $400

Step-by-step explanation:

Let

x ----> quantity sold by Annette

y ---> quantity sold by Barb

z ---> quantity sold by Carlita

we know that

x+y+z=1,480 ----> equation A

x=y+120 ----> equation B

y+z=x+280 ----> equation C

substitute equation C in equation A and solve for x

x+(x+280)=1,480

2x=1,480-280

2x=1,200

x=\$600

<em>Find the value of y</em>

x=y+120

600=y+120

y=600-120=\$480

<em>Find the value of z</em>

x+y+z=1,480

600+480+z=1,480

1,080+z=1,480

z=\$400

therefore

The quantity sold by Annette was $600

The quantity sold by Barb was $480

The quantity sold by Carlita was $400

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