Mini and Vinay are quiz masters preparing for a quiz. In 'x' minutes, Mini makes 'y' questions more than Vinay. If it were possible to reduce the time needed by each to make a question by 2 mins , then in 'x' minutes Mini would make '2y' questions more than Vinay. How many questions does Mini make in 'x' minutes?

1] 1/4[ 2 ( x+y) - ( 2 x^2 + 4 x y^2 )^1/2 ]

2] 1/4[ 2(x-y) - ( 2 x^2 + 4 y^2 )^1/2 ]

3] Either option 1 or 2

4] 1/4[ 2(x-y) - ( 2 x^2 - 4 y^2 )^1/2 ]

No of question Vinay per minute he makes = Q /x questions

No of question mini per minute he makes = (Q + y) /x questions

To make one question suppose vinay takes z minute and t minute by mini.

Case 2 : To make one question suppose vinay takes z minutes -2 and t minutes - 2 by mini.

Vinay In x minutes --> Q1 question

1 min --> Q1 / x questions

Mini

In x minutes --> Q1 + 2y questions

1 min --> ( Q1 + 2y) / x questions

How to solve further