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Marina CMI [18]
3 years ago
9

The cost of a toy is $20 less than 2 times the cost of a toy train. If the cost of the toy car is $100, what is the cost of the

toy train?
Mathematics
2 answers:
Nutka1998 [239]3 years ago
8 0
---------------------------------------------------------------------
Define x :
---------------------------------------------------------------------
Let the cost of the toy train be x.
Toy Train = x
Toy car = 2x - 20

---------------------------------------------------------------------
Construct equation :
---------------------------------------------------------------------
The toy car costs $100.
⇒ 2x - 20 = 100

---------------------------------------------------------------------
Solve x :
---------------------------------------------------------------------
2x - 20 = 100
2x = 100 + 20
2x = 120
x = 60 

---------------------------------------------------------------------
Find the cost of the toy train :
---------------------------------------------------------------------
Cost of the toy train = x = $60

---------------------------------------------------------------------
Answer: The toy train costs $60.
---------------------------------------------------------------------
kiruha [24]3 years ago
5 0
The toy is 2(x)-20, x is 100, being the toy car. So 2(100)= 200 -20 =180. The cost of the toy is $180
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