A jar has 40 litre milk. From the jar, 8 litre of milk was taken out and replaced by an equal quantity of water. If 8 litre of the newly formed mixture is taken out of the jar. What is the final quantity of milk left in the jar
Final qunatity in the jar = 40×(1-8/40)2
=40×4/5×4/5
=25.6litre
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
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
