Gaurav ate in a restaurant and got a membership discount of 30% on the original bill amount but he has to pay 9% as service tax and 8% service charge on the discounted bill amount. If Gaurav paid Rs 4,345, which included a tip of Rs 250, how much money did he gave as service charge?

I. 63x² + 37 x – 40 = 0

II. 15 y² + 29 y + 12 = 0

I. 2x²– 5x – 63 = 0

II. 2y²– 7y – 72 = 0

I. 3x² = 2x² + 9x – 20

II. 3y² = 75

I. x² - 208 = 233

II. y² + 47 - 371 = 0

I. x³ = 1728

II. y² – 15y + 56 = 0

In each of these questions, two equations (I) and (II) are given.You have to solve both the equations and give answer   

I. x² + 13x + 42 = 0

II. y² + 13y + 40 = 0

In each of these questions, two equations (I) and (II) are given.You have to solve both the equations and give answer   

I. 8x² - 74x + 165 = 0

II. 15y² - 38y + 24 = 0

(i) 2x² – 9x + 10 = 0

(ii) 4y² – 12y + 9 = 0