The ratio, by volume, of soap to alcohol to water in a certain solution is 4:40:90. The solution will be altered so that the ratio of soap to alcohol is doubled while the ratio of soap to water is halved. If the altered solution will contain 200 cubic centimeters of alcohol, how many cubic centimeters of water will it contain?  Choose the correct option
A) 1300	B) 1500	C) 1600	D) 1700	E) 1800

Rationale: soap : alcohol initial ratio soap : alcohol : water - - > 4 : 40 : 90 initial soap : alcohol = 4 / 40 = 4 : 40 after doubled soap : alcohol = 2 * 4 / 40 = 8 : 40 initial soap : water = 4 / 90 = 4 : 90 after halved soap : water : 1 / 2 * 4 / 90 = 2 / 90 = 2 : 90 after soap : alcohol : water - - > 8 : 40 : 360 - - > 1 : 5 : 45 given alcohol 200 cubic centimeter . ratio is 40 : 200 : 1800 ( 1 : 5 : 45 ) for 200 cubic centimeter of alcohol - - - 1800 cubic cm water is required . answer - e
Answer: E