How many liters of oil at Rs.40 per liter should be mixed with 240 liters of a second variety of oil at Rs.60 per liter so as to get a mixture whose cost is Rs.52 per liter?
Options:
(A) 120
(B) 150
(C) 160
(D) 180
(E) 200
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8:12 = 2:3
If 240 lrs of the 2nd variety taken then the 1st variety should be taken as 160 lr So the answer is: (C).
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Find the odd man out
253, 136, 352, 328, 631, 244
Options:
(A) 328
(B) 136
(C) 352
(D) 631
(E) 531
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The sum all three digits comes to 10 except 328 So the answer is: (A).
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Four of the following five parts lettered a, b, c, d and e are exactly equal. Which of the following is not equal to the other four?
Options:
(A) 24(2)  – 12(2)  + 112 ÷ 14
(B) 17 × 12 + 59 × 4
(C) 15 × 28 + 20
(D) 27 × 16 + 56 ÷ 8
(E) 185 × 6 ÷ 2 – 23 × 5
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Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Other parts are equal to 440. So the answer is: (D).
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