Consecutive numbers

The sum of four consecutive odd numbers is 240. What are the numbers?

Correct answer:

a =  57
b =  59
c =  61
d =  63

Step-by-step explanation:

a+b+c+d=240 b=a+2   a+(a+2)+(a+4)+(a+6)=240  4a=228  a=4228=57  a=57
b=a+2=57+2=59
c=a+4=57+4=61
d=a+6=57+6=63



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