A concave lens is used to correct short-sightedness (myopia). In myopia, images are formed in front of the retina, resulting in a blurred image. This occurs when the eye is relativelytoolongortherefractivepowersofthe cornea and lens of the eye are relatively too strong.
Ratio of runs scored by A, B and C is 3:10:8, respectively. Total number of runs scored by the team is 200, which is four times the runs scored by B. Fi...
The speeds of three cars are in the ratio of 3: 2: 4. The ratio of respective time taken by these cars to travel the same distance is:
In what ratio should coffee powder costing Rs 2500/kg be mixed with coffee powder costing Rs 1500/kg so that the cost of the mixture is Rs 2250/kg?
A bag contains 10-paisa, 20-paisa and 50-paisa coins in the ratio of 8:9:10, respectively. If the total amount in the bag is Rs. 38, then find 80% of th...
The speed of the boat A and B in still water are in the ratio 15:13. The speed of the current for both boats is 16 km/hr. If the sum of time taken by bo...
A solution contains alcohol and water in the ratio 3:2. If 15 liters of water is added to the solution, the ratio becomes 3:5. What was the initial volu...
Difference between the ages of A and B is same as the difference between the ages of B and C. The difference between the ages of A and C is 8 years. If ...
Mohini's Biology test had 250 questions i.e., 20 Macromolecules, 60 Homeostasis and 70 Immunology questions. Although she answered 70% of the Macromolec...
Two numbers are such that the square of one is 224 less than 8 times the square of the other. If the numbers are in the ratio of 3 : 4, find the numbers.
The number of students in class IX and class X is 42 and 45, respectively. The ratio of the number of boys to girls in classes is IX and X is 9: 5 and 8...
