Ques: Find the third proportional to 9 and 12?
Options:
(A) 10
(B) 12
(C) 16
(D) 19
(E) 20
Ans: (C)
CoT: Formula = Third proportional = (b b)/a
A = 9 and B = 12
(12 12)/ 9 = 144/9 = 16

Ques: Sarah's seafood restaurant gets a delivery of fresh seafood every day, 6 days per week, and her delivery company charges her dollars per delivery plus cents per item delivered. If lst week Sarah's seafood restaurant had an average of x items per day delivered, then which of the following is the total cost, in dollars, of last week's deliveries ?
Options:
(A) 6cdx/100
(B) d + 6cx/100
(C) 6d + xc/100
(D) 6d + 6xc/100
(E) 6cdx
Ans: (D)
CoT: Answer will be D. Straightforward question.

Ques: The average of 11 results is 44, if the average of first six results is 49 and that of the last six is 52. Find the sixth result?
Options:
(A) 122
(B) 156
(C) 118
(D) 125
(E) 123
Ans: (A)
CoT: 1 to 11 = 11 * 44 = 484
1 to 6 = 6 * 49 = 294
6 to 11 = 6 * 52 = 312
6th = 294 + 312 484 = 122

Ques: Select Odd number:
6, 9, 15, 21, 24, 28, 30
Options:
(A) 20
(B) 21
(C) 24
(D) 28
(E) 30
Ans: (D)
CoT: Each of the numbers except 28, is a multiple of 3.