Question

An 8ft board is cut into two pieces whose lengths are in the ratio 7:5. What is the number of inches in the length of the longer piece?

Answer 1

lets call the length of the larger piece \(x\) so the length of the shorter piece is then \(8-x\)
you know \(\frac{x}{8-x}=\frac{7}{5}\) so you can solve for \(x\)

Answer 2

cross multiply, get
\[5x=7(8-x)\] and then solve the linear equation

Answer 3

5x=56-7x then +7x to each side is 12x=56 divide by 12 is about 4.6 . so the answer is 4.6 ?

Answer 4

hello?