A Merchant Wishes to Mix Peanuts That Sell for $2 $2.5 x + 8 y = 450$

Multiple Choice

A merchant wishes to mix peanuts that sell for $2.5 per pound and cashews that sell for $8 per pound to get 100 pounds of mixed nuts that sell for $4.50 per pound. Let x equal the number of pounds of peanuts and y equal the number of pounds of cashews. If solving this by writing two equations in two variables, which of the following could be one of the equations?

A) $2.5 x + 8 y = 450$
B) $2.5 x + 8 y = 4.50$
C) $x + y = 4.5$
D) $2.5 x + 8 y = 100$