Question
In physics examination a student scored 45% marks in
the first paper out of 160. How much percent marks should he score in the second paper out of 140 marks if he is to get an overall of 66% marks?Solution
Marks obtained in first paper = 45/100 × 160 = 72 Marks to be obtained in both the papers (160+140) × 66/100 = 198 ∴ Marks to be obtained necessarily is second paper = 198 - 72 = 126 ∴ Percentage of marks to be obtained in second paper = 126/140 × 100 = 90%Â
110 litres of mixture contains water and milk in the ratio 2:5 respectively. If 26 litres of the mixture is replaced by same quantity of water, then fin...
96 litres mixture of milk and water is mixed in an empty container in the ratio 5:3, respectively. If 24 litres of mixture is replaced with 24 litres of...
Two equal vessels A and B contain 70% of milk and 60% of milk respectively and the remaining sugar. In which 30 kg of mixture is taken out from vessel A...
A container has 600 litres of a liquid mixture made up of milk and water in the ratio 4:x. If 30 litres of water is added, the new ratio of milk to wate...
Quantity of milk is 10% more than that of water in 210 litres mixture. On adding (n - 5) litres water and (n + 5) litres milk, the new ratio becomes 11:...
A mixture (milk and water) contains 40% milk and rest 192 litres water. How much milk should be added to the mixture to make the ratio of milk to water ...
A shopkeeper blends 5 kg of coffee at Rs. 12 per kg with 7 kg at Rs. 8 per kg. What is the cost price (in Rs.) of the mixture per kg?
In a tank, milk and water are mixed in the ratio 5:2. After removing 35 litres of this mixture, 6 litres of water are added. If the resulting mixture ha...
A solution contains acid and water in the ratio of 3:11. If 10 litres of acid is added to the solution, the ratio of acid to water becomes 1:2. What was...
A 78-liter mixture contains milk and water in a ratio of 6:7. If an additional 24 liters of milk and 48 liters of water are added to the mixture, what w...
Relevant for Exams:
