Question 66790
Let x=first brother's age
x+2=second brother's age
x+4=third brother's age

Now we are told that the product of the first and third boys' age x(x+4) is 20 more than twice the second boy's age(20+2(x+2)).  So our equation to solve is:

x(x+4)=20+2(x+2)

x^2+4x=20+2x+4 subtract 2x and 24 from both sides

x^2+4x-2x-24=24-24+2x-2x  collecting like terms:

x^2+2x-24=0  This can be factored:
(x+6)(x-4)=0

x=-6  discount this solution---age is not negative


x=4 ------------age of the first brother

x+2=4+2=6-----------------age of the second brother

x+4=4+4=8--------------------age of the third brother

CK

Product of 1st and 3rd boys age is 20 more than twice the product of the second boys age

Product of 1st and 3rd boys age =4*8=32

20 more than twice the product of the second boy's age is 20+12=32

4---6----8=consecutive even integers ck


Hope this helps----ptaylor