The ratio, by weight, of coffee to sugar to water in a pot of coffee is 5:2:15. The ratio is then altered so that the ratio of coffee to sugar is halved while the ratio of coffee to water is doubled. If the altered pot of coffee contains 12 grams of sugar, how many grams of water does it contain after alteration?	Choose the correct choice from the following answers
A) 22.5	B) 20	C) 17.5	D) 15	E) 12.5
The new ratio of coffee to sugar is 2.5:2 = 5:4   The new ratio of coffee to water is 10:15.   The new ratio of coffee to sugar to water is 10:8:15.   If there are 12 grams of sugar, then there are  (15/8)*12= 
<gadget id="calculator"> (15/8)*12</gadget>
<output>45/2 = around 22.5</output>
22.5 grams of water.   The answer is 22.5.
<result>A</result>
The ratio, by weight, of coffee to sugar to water in a pot of coffee is 5:2:15. The ratio is then altered so that the ratio of coffee to sugar is halved while the ratio of coffee to water is doubled. If the altered pot of coffee contains 12 grams of sugar, how many grams of water does it contain after alteration?