human
Zoe wants to go on the field trip to Washington DC with her middle school this spring and the cost is $485. Her grandma gave her $250 toward her fees and she must earn the rest by selling candy bars. She makes $1.25 for every candy bar she sells. How many candy bars does Zoe need to sell to earn the money for the trip?
assistant
How much money does Zoe need to earn? ** Since Zoe’s grandma gave her some money toward her trip, she needs to come up with $485 – $250 = $<<485-250=235>>235.
How many candy bars does Zoe need to sell? ** This means she must sell $235 / $1.25/candy bar = <<235/1.25=188>>188 candy bars.
#### 188