A food makes a 10-lb mixture of peanuts, almonds and raisins. The cost of peanuts is $1.50 per pound, almonds cost $2.00 per pou
nd, and raisins cost $1.50 per pound. The mixture calls for twice as many peanuts as almonds. The total cost of the mixture is $16.00. How much of each ingredient did the store use?