Directions (next five questions) : In these questions, two equations numbered I and II are given. You have to solve both the equations and mark the appropriate answer
I. 3x2-13x-10=0
II. 3y2+10y-8=0
⇒ 3x2-15x+2x-10=0
⇒ 3x(x-5)+2(x-5)=0
⇒ (x-5)(3x+2)=0
⇒ x=-2/3,5
⇒ 3y2+12y-2y-8=0
⇒ 3y(y+4)-2(y+4)=0
⇒ (y+4)(3y-2)=0
⇒ y=4,2/3
∴Relationship between x and y cannot be determined
I. 12x2+7x+1=0
II. 6y2+5y+1=0
I. 25x2+35x+12=0
II. 10y2+9y+2=0
I.3x3-22x+40=0
II. 5y2-21y+16=0
I. x2-4x-12 = 0
II. y2-5y-14=0
A and B started a business with initial investments in the respective ratio of 18:7. After four months from the start of the business. A invested INR 2000/- more and B invested INR 7000/- more. At the end of one year. If the profit was distributed among them in the ratio of 2:1 respectively, what was the total initial investment with which A and B started the business