The hay previously cost $15 per bale so 10 bales would cost $15*10 = $<<15*10=150>>150

Double 10 bales is 10*2 = <<10*2=20>>20 bales

Better quality hay cost $18 per bale so 20 bales would cost $18*20 = $<<18*20=360>>360

Farmer Brown would need $360-$150 = $<<360-150=210>>210 more

# Answer

210
<|im_start|>system
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<|im_start|>user
Chester must deliver ten bales of hay to Farmer Brown. Farmer Brown wants Chester to supply better quality hay and double the delivery of bales of hay. If the previous hay cost $15 per bale, and the better quality one cost $18 per bale, how much more money will Farmer Brown need to meet his own new requirements?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
210
Chester must deliver ten bales of hay to Farmer Brown. Farmer Brown wants Chester to supply better quality hay and double the delivery of bales of hay. If the previous hay cost $15 per bale, and the better quality one cost $18 per bale, how much more money will Farmer Brown need to meet his own new requirements?
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