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Chairs are on sale for $7 and tables are on sale for $40. If a store sold a totally of 30 of these items and collected $507, how much of each were sold?

Chairs are on sale for 7 and tables are on sale for 40 If a store sold a totally of 30 of these items and collected 507 how much of each were sold class=

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Answer:

21 chairs and 9 tables

Step-by-step explanation:

c=chair

t=table

c + t = 30

7c + 40t = 507

I am going to solve this using elimination by multiplying the top equation by -7

-7c - 7t = -210

7c + 40t = 507

subtract downwards

33t = 297

t= 9

there are 9 tables

c + 9 = 30

c= 21

there are 21 chairs

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