To buy 100 pencils the school needs 100 * $1.80 = $<<100*1.80=180.00>>180.00.

Each ice pop sells for $1.50 but costs $.90 to make, for a net profit of $1.50 - $.90 = $<<1.50-.90=.60>>.60.

So in order to raise $180.00, the school will need to sell $180.00 / $.60 per ice-pop = <<180/.60=300>>300 ice-pops.

# Answer

300
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
To raise money, a school is selling ice-pops for $1.50. It costs 90 cents to make each pop, and the money from the pops will be used to buy pencils, which cost $1.80 each. How many pops must be sold to buy 100 pencils?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
300
To raise money, a school is selling ice-pops for $1.50. It costs 90 cents to make each pop, and the money from the pops will be used to buy pencils, which cost $1.80 each. How many pops must be sold to buy 100 pencils?
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