An election is held in a city between two people A and B. Out of total eligible voter 33(1/3) % of the voters are not enrolled in the election. From the remaining x% of the people are invalid voters and of the remaining 68.75% of the votes were received by A. A defeated B by 300 votes. If the number of invalid voters in the election is 50 less than the number of votes received by person B then,

Quantity I: Find the value of 2x?

Quantity II: Find, 25% of the number of invalid voters in the election?