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In an imaginary mathe-matical operation '+' means multiplication, 'x' means subtraction, -: means addition and - means division. All other rules in mathematical operation are the same as in the existing system. Which one of the following gives the result of 175-25-:5+20xx3+10=?

Sunny Gupta scored x marks in Maths, y marks in Hindi and 40 marks in English. What is his total score is these three subjects ?

Sohan got 54 marks in Hindi, 65 marks in Science, 89 marks in Maths , 69 marks in Social science and 68 Marks in English . The maximum marks of each subject are 100. How much over all perecentage of marks did he get ?

Vikram scored 72 percent marks in five subjects- Hindi, Science, Maths, English and Sanskrit together , where in the maximum marks of each subject were 100. How many marks did Vikram score in Science if he scored 80 marks in Hindi, 70 marks in Sanskrit, 76 marks in Maths and 65 marks in English ?

Pradeep got 32 marks in Hindi, 58 marks in Science, 46 marks in Maths, 94 marks in Social Science and 74 marks in English. The maximum marks of each subject are 100. How much over-all percentage of marks did he get?

The given Pie Chart (angles are not as per any chosen scale) presents the marks scored by Amit in five subjects. Maximum marks in each subject = 100. Total score of Amit = 450. What is the difference between the marks scored by Amit in Hindi and Maths?

Study the following information and answer the following questions : A, B, C, D, E, G, and I are seven friends who study in three different standards, namely 5th, 6th and 7th, such that not less than two friends study in the same standard. Each friend also has a different favourite subject, namely History, Civics, English, Marathi, Hindi, Maths and Economics but not necessarily in the same order. A likes Maths and studies in the 5th standard with only one other friend who likes Marathi. I studies with two other friends. Both the friends who study with I like languages (here languages include only Hindi, Marathi and English).D studies in the 6th standard with only one person and does not like Civics. E studies with only one friend. The one who likes History does not study in the 5th or 6th standard. E does not like languages. C does not like English, Hindi or Civics. Which combination represents E's favourite subject and the standard in which he studies ?