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59 `xx` 2 + 30 `-:` 6 – 54 118 + 5 – 54 123 – 54 = 69
Average run scored by a batsman in first ‘x’ matches is 88. In next 10 matches he scored runs with an average of 100 so that his over...
The average weight of 48 students in a school is 32 kg. If two new students with weights of 'x' kg and '(x + 6)' kg join the group, the average weight o...
The average Economics marks of two sections A and B of class X in the annual examination is 70. The average marks of Section A is 72.5 and that of secti...
The average score of a class of boys and girls in examination is X. The ratio of boys and girls in the class is 4:3. If the average score of the boys (X...
In a class of 50 students there are 22 girls who scored an average of 35 marks in the test. What is the average marks of the boys if the class average ...
Average 20 numbers is ‘x’. If the average of first 12 numbers is 74.5 while average of last 5 numbers is 84.8 and 13th, 14th a...
The average age of 22 children and their teacher's age are 20 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
Sonali applied for a job of Science teacher in a school. In the test for job, she scored 8 in Physics, 8 in Chemistry, 6 in Biology, and 6.5 in the inte...
The average number of taxis of three colours (black, white and yellow) in a taxi stand is 144. The number of black taxis is 30 more than that of yellow ...