The total amount of money collected from the boy's payment is 40*$50 = $<<40*50=2000>>2000

There are four times as many boys at Lulu's party as girls, meaning there are 40/4 = <<40/4=10>>10 girls at the party.

since each boy paid twice the money that each girl paid to attend the party, each girl paid $50/2 = $<<50/2=25>>25

The total amount of money collected from the girl's payment is $25*10 = $<<25*10=250>>250

The total amount of money collected at the party is $250+$2000 = $<<250+2000=2250>>2250

# Answer

2250
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
There are four times as many boys at Lulu's party as girls. Each boy paid twice the money that each girl paid to attend the party. If there are 40 boys at the party and each boy paid $50 to attend the party, calculate the total amount of money collected at the party.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
2250
There are four times as many boys at Lulu's party as girls. Each boy paid twice the money that each girl paid to attend the party. If there are 40 boys at the party and each boy paid $50 to attend the party, calculate the total amount of money collected at the party.
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