Three investors, M, N, and O, divide the profits from a business enterprise in the ratio of 5 : 7 : 8, respectively. If investor M earned $ 3,500, how much money did investors N and O earn in total? Pick one.
A) $4,000  B) $4,900  C) $5,600  D) $9,500  E) $10,500
Let profit for M = 5x   profit for N = 7x   profit for O = 8x   Investor A earned = 3500   5x = 3500   Total profit for N and O = 7x+ 8x = 15x   Therefore , 15x 7 + 8= 
<gadget id="calculator">7 + 8</gadget>
<output>15</output>
15x   Therefore , 15x= 5x * 3 = 3500 * 3 = 10,500   Answer $10,500
<result>E</result>
Three investors, M, N, and O, divide the profits from a business enterprise in the ratio of 5 : 7 : 8, respectively. If investor M earned $ 3,500, how much money did investors N and O earn in total?