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olya-2409 [2.1K]
3 years ago
15

A washer and dryer cost $869 combined. The washer cost $81 less than the dryer. What is the cost of the dryer?

Mathematics
2 answers:
marysya [2.9K]3 years ago
7 0
W+d=869
w=d-81
plug in
(d-81)+d=869
2d-81=869
+81 both sides
2d=950
÷2 both sides
d=475
dryer cost $475

let's check w=475-81
w=394
475+394=869
869=869
the solution is true :)


MrMuchimi3 years ago
3 0
Let's assume the price of the washer is w and the price of the dryer is d.
w + d = 869
d - 81 = w
To find the cost of the dryer, we just need to substitute it for w in the first equation:
(d - 81) + d = 869
2d - 81 = 869
2d = 950
d = 475
The dryer is $475
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guajiro [1.7K]

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The attached table

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P ( work/ senior )

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Add 25+5+5 (because that is all the numbers in the 'Seniors' row) and then take the 5 that is in the 'Work' column and put that over 25. (5/25 fraction as a percent is 14).

Learn more about probability at

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