Question
I. p²= ∛1331 II. 2q² - 21q + 55 =
0 In each of these questions two equations numbered I and II are given. You have to solve both the equations and give answer, if –Solution
I. p² = ∛1331 p = ±√11 = ±3.316 II. 2q² - 21q + 55 = 0 2q² - 10q - 11q + 55 = 0 2q(q - 5) - 11( q - 5) = 0 (2q - 11) (q - 5) = 0 q = 5 ,11/2 Hence p < q,
A mixture of lime and water contains 3a liters lime and (a + 40) liters water. Upon adding 20 liters more water, the ratio of quantity of water to that ...
- An alloy ‘M’ contains lead and iron in the ratio 4:3, and alloy ‘N’ contains iron and copper in the ratio 2:5. If 35 grams of ‘M’ and 42 grams ...
A mixture contains 60 liters of milk and water in the ratio 3:2. How much water should be added to make the ratio of milk to water 3:4?
Two alloys are mixed in the ratio of 3:5. The first alloy contains 60% gold, while the second alloy contains 80% gold. Find the percentage of gold in th...
A container can hold 1,000 liters of liquid. If it is filled with 30% water and 70% oil, how many liters of oil are in the container? If 50 liters of oi...
A container contains a mixture of 50 liters of milk and water in the ratio 5:3. If 8 liters of the mixture is taken out and replaced by water, what is t...
A mixture of 280 ml contains milk and water in the ratio of 3:1. If 60 ml of milk and 20 ml of water are added to the mixture, fi...
In a mixture of 120 litres, milk was 58(1/3)% and rest was water. If (x + 15) of the mixture is taken out and add 8 litres of milk in it, then the diff...
- In a mixture of 40 liters, the ratio of milk and water is 3:1. If the ratio has to be changed to 4:1, then the amount of milk to be added is?
A container contains 25 liters of milk. From this container, 5 liters of milk is taken out and replaced by water. This process is repeated two times. Ho...