SOLUTION: The Wheel shop sells other kinds of vehicles. There are bicycles and go-carts in a different room of the shop. Each bicycle has only one seat and each go-cart has only one seat.

Question 160981: The Wheel shop sells other kinds of vehicles. There are bicycles and go-carts in a different room of the shop. Each bicycle has only one seat and each go-cart has only one seat. There are a total of 21 seats and 54 wheels in that room. Bicyle has 2 wheels and go-carts have 4 wheels. How many bicycles and how many are go-carts?
Answer by jojo14344(1513) (Show Source): You can put this solution on YOUR website!

-----------------> EQN 1
We get ----------> EQN 2
Also,
---------------> EQN 3: 2 wheels for BC, & 4 wheels for GC = 54 wheels
Subst. EQN 2 in EQN 3:

, Number of Go Carts
Go back EQN 2:

, Number of Bicycles
Check via EQN 3:

Thank you,
Jojo
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