Jar Y has 10% more marbles than Jar X . What percent of marbles from Jar Y need to be moved into X so that both jars have equal marbles
Options:	A) 4.54%	B) 9.09%	C) 10%	D) 11%	E) 12.25 %
No; the choices will be approximated only when GMAT question explicitly mentions that;   Here the answer is very close 4.54, not 5.   Jar Y has 10% more marbles than X   Y = 1.1X   If k marbles are taken out of Y. The remaining marbles in Jar Y= 1.1X-k   If k marbles are added to X. The new marbles' count in Jar X= X+k   And we know they are equal;   X+k = 1.1X-k   2k = 0.1X   k= 0.05X   The marbles taken out of Y = 0.05X   Question is: 0.05X is what percent of marbles that was originally there in Y i.e. 1.1X   0.05X1.1X∗1000.05X1.1X∗100   0.05X1.1X∗1000.05X1.1X∗100   5011=4.54¯≈4.545011=4.54¯≈4.54   4.54%NSWER:4.54%
<result>A</result>
Jar Y has 10% more marbles than Jar X . What percent of marbles from Jar Y need to be moved into X so that both jars have equal marbles