If one divides the number 40 into 3 parts such that the ratio of the 3 numbers is
2: 3: 5, what is the largest number?
a) 10
b) 4
c) 12
d) 8
e) 20

Graph red beads cost $1 an ounce and gold beads cost $3 an ounce. juanita wants to purchase a 12-ounce mixture of red and gold beads that she can sell for $2 an ounce. the solution of the system shows the number of beads needed for juanita to break even. x + y = 12, x + 3y = 24 how many ounces of red beads will juanita buy to break even? how many ounces of gold beads will she buy?