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What amount of a glycerine mixture containing 35% water is mixed with 28 litres of another glycerine mixture containing 50% water so that final mixture contains 42% water?
A sample of 50 litres of glycerine is found to be adulterated to the extent of 20%. How much pure glycerine should be added to it so as to bring down the percentage of impurity to 5% ?
The ratio of marks obtained by Rohit in Mathematics to the marks obtained in Science is 8 : 7, the marks of English is 10% more than the marks obtained in Science and the marks obtained in Hindi is 10% less than the marks obtained in Mathematics. If each subject is of 100 marks and the sum of marks of English and Hindi is 149, then find the percentage of passing mark where the passing marks is 40 more than the marks obtained by Rohit in Mathematics.
. A, B, C, D, E and F compared their marks in an examination and found that A obtained the highest marks, B obtained more marks than D, C obtained more than at least two others and £ had not obtained the lowest marks. Consider the following statements : Statement 1: At least two members obtained less marks than C Statement 2: E and F obtained the same marks Which of the above statement(s) is/are sufficient to identify the one with the , lowest marks ?
In a test, Randhir obtained more marks than the total marks obtained by Kunal and Debu. The total marks obtained by Kunal and Shankar are more than those of Randhir. Sonal obtained more marks than Shankar. Neha obtained more marks than Randhir. Who amongst them obtained highest marks?
The table shows the marks obtained of three students before and after studying mathematics in a group. Name Marks obtained before studying in group(out of 100) Marks obtained after studying in group(out of 100) Mansi 67 79 Harman 54 60 Faisal 63 74 which is the approximate average marks obtained by all the three students together in each type of study?
Average marks obtained by A, B and C is 78. Average marks obtained by A and B is 81 and average marks obtained by B and C is 67. What is the mark obtained by B?
In an examination. three friends Mohit, Ajay and Abhiuday got their results. Marks of Abhiuday is equal to the average marks obtained by  Mohit and Ajay. If marks of Abhiuday is 240 and marks obtained by Ajay is half that of Mohit. Calculate the marks obtained by Ajay is what percentage of the sum of marks obtained by all three of them?
The average of the scores obtained by Jitendra and Umar is 70, that of the scores obtained by Umar and Shyamal is 56, while the average of the scores obtained by Shyamal and Jitendra is 78. What is the average of the scores obtained by Jitendra, Umar, and Shyamal?
The average of marks obtained by A and B is 15 less than that of average marks obtained by B and C. If the marks obtained by C is 65, what is the marks obtained by A?