Answer: w = 15
Original Question: 40w + (1.5)(8)(w) =780
Explanation:
1) 40w + 1.5 x 8w = 780
2) 40w + 12w = 780
3) 52w = 780
4) 52w/52 = 780/52
w = 15
4.5m questions
5.8m answers