The weight of a glass of jar is 40% of the weight of the jar filled with coffee beans. After some of the beans have been removed, the weight of the jar and the remaining beans is 60% of the original total weight. What fraction part of the beans remain in the jar?  Choose the most appropriate option:
A) 1/5 B) 1/3 C) 2/5 D) 1/2 E) 2/3
Let weight of jar filled with beans = 100 g   Weight of jar = 40 g   Weight of coffee beans = 60 g   Weight of jar and remaining beans = 60 g   Weight of remaining beans = 20 g   Fraction remaining = 20/60 = 1/3   Answer is 1/3.
<result>B</result>
The weight of a glass of jar is 40% of the weight of the jar filled with coffee beans. After some of the beans have been removed, the weight of the jar and the remaining beans is 60% of the original total weight. What fraction part of the beans remain in the jar?