a ribbon measuring (v+4) feet in length was cut into two pieces in the ratio 3:7. What was the length of the longer piece? answer

Answer 1

let the two pieces be 3x and 7x , then

3x + 7x = v+4
10x = v+4
x = (v+4)/10

The longer piece was 7x or
7(v+4)/10

Answer 2

the weight of 2 science fiction books and 1 autobiography is 5/6w pounds. what is the total weight of 4 of these science fiction books and 2 of these autobiographies?

Answer 3

5/3w