The weight of a glass of jar is 30% 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 correct option
A) 1/5
B) 1/3
C) 2/5
D) 1/2
E) 3/7
Let weight of jar filled with beans = 100 g   Weight of jar = 30 g   Weight of coffee beans = 70 g   Weight of jar and remaining beans = 60 g   Weight of remaining beans = 30 g   Fraction remaining = 30/70 = 3/7   Answer is 3/7.
<result>E</result>
The weight of a glass of jar is 30% 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?