A machine requires 480 ounces of oil everyday, and it is given a mixture of oil A and oil B. Oil A consists of 5% special additives while oil B consists of 8% 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?
A 260
B 280
C 290
D 300
E 320
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kvcpk
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480 = A+Baskaichin wrote:A machine requires 480 ounces of oil everyday, and it is given a mixture of oil A and oil B. Oil A consists of 5% special additives while oil B consists of 8% 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?
A 260
B 280
C 290
D 300
E 320
5A/100 additives in A
8B/100 Additives in B
A/20 + 2B/25 = 30
5A +8B = 3000
5A + 5B = 2400
3B = 600
B = 200
A = 280
pick B
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rahul goyal
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Thanks. But what is OA.kvcpk wrote:480 = A+Baskaichin wrote:A machine requires 480 ounces of oil everyday, and it is given a mixture of oil A and oil B. Oil A consists of 5% special additives while oil B consists of 8% 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?
A 260
B 280
C 290
D 300
E 320
5A/100 additives in A
8B/100 Additives in B
A/20 + 2B/25 = 30
5A +8B = 3000
5A + 5B = 2400
3B = 600
B = 200
A = 280
pick B
