3668: Four different candles, which can last for 5 hours, 4 hours. 3 hours and 2 hours of burning, respectively, are lit in a room at the same instant and allowed to burn till such time that the three candles in the room get extinguished. The cost of burning each one of these candles is 75 paise per hour. The cost involved is:
(a) Rs. 2.75
(b) Rs. 3.75
(c) Rs. 9.75
(d) Rs. 12.50
3669: Match List I with List II and select the correct answer using the codes given below the Lists :
List I
I. Boom
II. Recession
III. Depression
IV. Recovery
List II
(A) Business activity at high level with increasing income, output and employment at macro level
(B) Gradual fall of income, output and employment with business activity in a low gear
(C) Unprecedented level of under employment and unemployment, drastic fall in income, output and employment
(D) Steady rise in the general level of prices, income, output and employment
Codes:
(a) I-A, II-B, III-C, IV-D
(b) I-A, II-B, III-D, IV-C
(c) I-B, II-A, III-D, IV-C
(d) I-B, II-A, III-C, IV-D