Each row is read from left to right not down, that's what messed me up. All it wants you to do is fill in the blanks to make each row equal 187. It's a tricky table. q+d+n+p = 187. q=25, d=10, n=5, p=1. So for the first row, it's 4q + 6d + 5n + 2p = 187.