85.3k views
4 votes
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?

User Mtxz
by
7.4k points

2 Answers

1 vote
---------------------------------------------------------------------
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.
---------------------------------------------------------------------
User Alvarez
by
9.0k points
6 votes
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
User Nitin Wahale
by
8.2k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories