HELP PLEASE! I NEED THE ANSWER NOW! THE FIRST PERSPN TO ANSWER IT AND GIVE ME AN EXPLANATION WILL BE MARKED AS BRAINIEST!!! storekeeper wants to mix two types of flour to get 300 pounds, so he can sell it by 2.50$ per pound. If he uses flour worth $2.40 a pound with another flour worth $3.00 a pound, how many pounds of each does he use?