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marysya [2.9K]
2 years ago
8

I NEED HELP URGENT! WILL GIVE BRAINLIEST

Mathematics
1 answer:
zubka84 [21]2 years ago
5 0

Part A

Let <u>at-store</u> service be x

Let <u>on-site</u> service be 3x

Let <u>by-mail</u> service be x - 10

Part B

15 services on-site

40 services at-store

5 services by-mail

Total sales = $2650

∴ 15(3x) + 40(x) + 5(x-10) = 2650

Simplify

15(3x) + 40(x) + 5(x-10) = 2650

45x + 40x + 5x - 50 =2650

90x = 2700

90x/90 = 2700/90

x = 30

Part C

Since x = 30 and services on-site = 3x we can now solve for on-site

on-site = 3x = 3(30) = 90

On-site 1 repair cost $90

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