Question
Rajan scored 25% higher marks in Social Studies than in
Science. If the average score he achieved across Social Studies, Science, and Arts is 89, and he obtained 96 marks in Arts, determine his score in Science.Solution
Total marks scored by Rajan in Social studies, Science, and Arts = 89 × 3 = 267 So, marks scored by Rajan in Social studies and Science = 267 – 96 = 171 Let the marks obtained by Rajan in science be ‘x’. So, marks obtained by Rajan in social studies = 1.25x So, x + 1.25x = 171 2.25x = 171 x = 171/2.25 x = 76 So, marks obtained by Rajan in Science = 76 marks.
The average marks scored by 32 boys and 38 girls are 70 and 92 respectively. Find the average marks scored by all the students together. (Answer should ...
The average weight of 14 persons increases by 3.5 kg when a new person comes in place of one of them weighing 48 kg. The weight of the new person is.
The average number of taxis of three colours (black, white and yellow) in a taxi stand is 155. The number of black taxis is 60 more than that of yellow ...
The average of six numbers is 66. When two more numbers are included, the average increases by 2. Find the average of the numbers included.
The average number of books on Biology, Chemistry, and Physics in a book shop is 300. Biology books are 150 more than the average number of Chemistry an...
The average age of (x + 4) players in a team is 18 years. If a 38 years old coach joins the team, the average increases by 1 year. Find x% of 500.
The average of the first 10 numbers is 'x+20', the average of the next 14 numbers is 'x', and the average of the remaining 16 numbers is 'x−30'. If th...
The average age of a class of 18 girls is 14 years. If 2 new girls having average age of 10 years join the class, then the average age of the class beco...
The average number of novels on historical, thriller and fantasy in a library is 195, and the average number of novels on historical and fantasy is 150....
The average age of 32 children and their teacher's age are 28 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
Relevant for Exams:
