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?

4 answers

2science + 1 auto ----> 5/6w pounds
4science + 2 auto
= 2(2science + 1 auto)
= 2(5/6w)
= 5/3w pounds
2 + 1 = 5/6 lbs.
5/6 lbs. + 5/6 lbs. = 10/6 lbs. = 5/3 lbs.
4 + 2 = 5/3 lbs.
2 + 1 = 5/6w lbs.
5/6w lbs. + 5/6w lbs. = 10/6w lbs. = 5/3w lbs.
4 + 2 = 5/3w lbs.
10/12w +8