A box contains only marbles. If 1/4 of the marbles were removed, the box would be filled to 1/2 of its capacity. If instead 100 marbles were added, the box would be full. How many marbles are in the box?

A box contains only marbles. If 1/4 of the marbles were removed, the box would be filled to 1/2 of its capacity. If instead 100 marbles were added, the box would be full. How many marbles are in the box?

A 100

B 200

C 250

D 300

Solution

Correct Answer: Option B

A.T.Q,

x-1/4x = 1/2

x = 2/3

Remaining = (1-2/3) = 1/3

Again,

1/3 part =100

1 part =300

2/3 part = 200