human
John buys a chair. He then buys a table that is 3 times the price of the chair. Then, he buys a couch that is 5 times the price of the table. If John paid $380 for all these items, what is the price of the couch?
assistant
Define a variable ** Let x be the price of the chair.
How much does the table cost? ** The table costs 3*x.
How much does the couch cost? ** The couch costs 3*x*5=15*x.
Write an equation ** x+3*x+15*x=380
Simplify ** 19*x=380
Simplify ** x=<<20=20>>20
How much does the couch cost? ** The couch costs 20*15=<<20*15=300>>300 dollars.
#### 300