Directions (next 6 questions) : In these questions, two questions numbered I and II are given. You have to solve both the equations and mark the appropriate option.
Give answer :
I. 6x2+11x+3=0
II 20y2+9y+1=0
6x2+2x+9x+3=0
2x(3x+1)+3(3x+1)=0
(3x+1)(2x+3)=0
x=1/3,3/2
II. 20y2+9y+1=0
20y2+5y+4y+1=0
5y(4y+1)+1(4y+1)=0
(4y+1)(5Y+1)=0
y=-1/4,-1/5
∴x< y
I. 30x2+17x+2=0
II 3y2+8y+4=0
I. 4x2-13x+10=0
II 2y2-15y+22=0
I. x2-10x+25=0
II y2-9y+20=0
I. 2x2-9x+4=0
II y2-14y+40=0
The speed of a boat in still water is 16km/h and the speed of the current is 2 km/h. The distance travelled by the boat from point A to point B downstream is 12 km more than the distance covered by the same boat from point B to point C upstream in the same time. How much time will the boat take to travel from C to B downstream