12. A solution of 8% boric acid is to be diluted by adding a 2% boric acid solution to it. The resulting mixture is to be more than 4% but less than 6% boric acid. If we have 640 litres of the 8% solution, how many litres of the 2% solution will have to be added?
Linear Inequalities
Miscellaneous Exercise
Class 11
Linear Inequalities
Miscellaneous Exercise
3. Solve : (-3≤4-{7x over 2}≤18).
4. Solve : (-15<{3(x-2) over 5}≤0).
5. Solve : (-12<4-{3x over -5}≤2).
6. Solve : (7≤{(3x+11)over 2}≤11).
7. Solve : (5x+1>-24) (,5x-1<24 ) and represent the solution graphically on number line.
8. Solve : (2(x-1){<}x+5,) (3(x + 2) > 2-x ) and represent the solution graphically on number line.
9. Solve : (3x-7>2(x-6))(,6-x>11-2x ) and represent the solution graphically on number line.
