X + x + 3(2+x)= 36
2x + 6 + 3x = 36
5x + 6 = 36
5x = 36 - 6
5x = 30
x = 6
Longer piece = 2 + 6 = 8inches
There is no ones place after the decimal so 3 is in the tenth place, so 2.4
Interest = Principle(Rate)(Time)
2500(.07)(6) = 1050
The interest will be $1,050