Paul is 5 years younger than Roman and Jules is 10 years younger than the sum of Paul's and Roman's age.How old is Roman if the three ages add up to 80 years?请在15分钟内回答

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Paul is 5 years younger than Roman and Jules is 10 years younger than the sum of Paul's and Roman's age.How old is Roman if the three ages add up to 80 years?请在15分钟内回答
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Paul is 5 years younger than Roman and Jules is 10 years younger than the sum of Paul's and Roman's age.How old is Roman if the three ages add up to 80 years?请在15分钟内回答
Paul is 5 years younger than Roman and Jules is 10 years younger than the sum of Paul's and Roman's age.How old is Roman if the three ages add up to 80 years?
请在15分钟内回答

Paul is 5 years younger than Roman and Jules is 10 years younger than the sum of Paul's and Roman's age.How old is Roman if the three ages add up to 80 years?请在15分钟内回答
设Roman x岁
x+x-5+ x+x-5-10=80
x=25
所以Paul 20,Roman 25,Jules 35.

p+5=R
J+10=P+R
P+R+J=80
Paul= 25
Roman=20
Julles=35