nails and screws are manufactured at a uniform weight per nail and a uniform weight per screw . if the total weight of one screw and one nail is half that of 6 screws and one nail , then the total weight of 3 screws , and 3 nails is how many times that of 1 screws and 5 nails ?
"let the weight of nail be n and that of screw be s . . so s + w = 1 / 2 * ( 6 s + 1 n ) . . . or 1 n = 4 s . . lets see the weight of 3 s and 3 n = 3 s + 3 * 4 s = 15 s . . and weight of 1 s and 5 n = 1 s + 5 * 1 s = 6 s . . ratio = 15 s / 6 s = 15 / 6 = 5 / 2 b"
divide(add(multiply(3, const_4), 3), const_10)