I thought that : the total in the first mixture had to be divisible by 4, and the total in the second mixture had to be divisible by 10. since I knew that the difference between the first and the second mixture was in the number of peanuts (8): I looked at the answer choice for a number that was divisible by 10 when 8 was subtracted from it.
Toma13
A wholesaler of nuts sells two mixtures of peanuts and cashews. The first mixture is 3/4 peanuts by weight. The second mixture has the same number of pounds of cashews as the first mixture but 8 fewer pounds of peanuts. If 7/10 of the weight of the second mixture is peanuts, how many pounds of nuts are in the first mixture?
A) 16
B) 32
C) 48
D) 80
E) 160