17 out of 18 is equal to 1 out of a plus 1 out of B plus 1 out of C ..

17 out of 18 is equal to 1 out of a plus 1 out of B plus 1 out of C ..

1 / 2 / 3 / 6 question: 4 / 5 equals 1 / 2 + 1 / 2 + 1 / 2 answer: 1 / 2 / 5 / 10