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Two types of oil are mixed and sold at ₹120 per kg. If they are mixed in the ratio 5:7, the profit is 20%. If they are mixed in the ratio 3:1, then the profit is 10%. Find the ratio of the prices of the two types of oil.

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JS,AE,SN,OT,NE

11. Select the option that is related to the fifth number in the same way as the second number is related
to the first number and the fourth number is related to the third number.
20 : 2 :: 42 : 4 :: 72 : ?
A 14
B 10
C 6
D 8
Answer: C

Series 3,7,17,41,85,179

216 64 8
6 4 2
328 589 ?

24,40,64,104,?,372

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8 : 6 :: ? : 12 :: 343 : 21