A certain industrial machine requires 15 quarts (480 ounces) of oil every day, and it is given a mixture of oil A and oil B. Oil A consists of 7% special additives while oil B consists of 10% special additives. If the machine needs exactly 30 ounces of the special additives to ensure smooth operation, then how much of oil A, in ounces, should be in the mixture? Pick:  A) a.	A – 260  B) b.	B – 280  C) c. C – 290  D) d.	D – 300  E) e.	E – 600
7%*x + 10% *(480-x)=30   18 = 3 %*x   x=600   e.	E – 600
<result>E</result>
A certain industrial machine requires 15 quarts (480 ounces) of oil every day, and it is given a mixture of oil A and oil B. Oil A consists of 7% special additives while oil B consists of 10% special additives. If the machine needs exactly 30 ounces of the special additives to ensure smooth operation, then how much of oil A, in ounces, should be in the mixture?