The ratio between the third proportional of 12 and 30 and mean proportional of 9 and 25 is
(A) 2 : 1
(B) 5 : 1
(C) 7 : 15
(D) 9 : 14
Ratio between two numbers is 3: 4. Product of their H.C.F and L.C.M is 2028. Find sum of the numbers.
(A) 68
(B) 72
(C) 86
(D) 91
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