There are 1200 jelly beans divided between two jars, Jar X and Jar Y. If there are 400 fewer jelly beans in jar X than three times the number of beans in jar Y, how many beans are in jar X?
Options:
A) 650
B) 700
C) 750
D) 800
E) 850
X+Y=1200 so Y=1200-X   X=3Y-400   X=3(1200-X)-400   4X=3200   X=800   The answer is 800.
<result>D</result>
There are 1200 jelly beans divided between two jars, Jar X and Jar Y. If there are 400 fewer jelly beans in jar X than three times the number of beans in jar Y, how many beans are in jar X?