<human>:  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?
<bot>: How much did the hay previously cost? ** The hay previously cost $15 per bale so 10 bales would cost $15*10 = $<<15*10=150>>150
How many bales of hay will Farmer Brown need? ** Double 10 bales is 10*2 = <<10*2=20>>20 bales
How much will the better quality hay cost? ** Better quality hay cost $18 per bale so 20 bales would cost $18*20 = $<<18*20=360>>360
How much more money will Farmer Brown need? ** Farmer Brown would need $360-$150 = $<<360-150=210>>210 more
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