A Farmer Has a 10%-Solution and a 4%-Solution of Pesticide

Multiple Choice

A farmer has a 10%-solution and a 4%-solution of pesticide. How much of each must she mix to have 336 gal of an 5% solution for her sprayer?

A) 280 gal of 10% solution,
56 gal of 4% solution.
B) 68 gal of 10% solution,
268 gal of 4% solution.
C) 51 gal of 10% solution,
285 gal of 4% solution.
D) 66 gal of 10% solution,
270 gal of 4% solution.
E) 56 gal of 10% solution,
280 gal of 4% solution.