Ecology : A branch of biology that deals with organisms 'relationships with each other and their physical environment'. Ethology : Biological analysis of human actions and social organisation or we can say the science of animal behaviour. Climatology : The scientific study of climate. Entomology : It is the branch of zoology concerned with the study of insects.
The average number of novels on historical, thriller and fantasy in a library is 170, and the average number of novels on historical and fantasy is 140....
Average age of company A is 21 years and average age of both companies A and B is 13 years. If the ratio of number of employees in company A and B is 3:...
The average cost price of 15 pens (having equal cost price) decreased by Rs.2, when one of the pen is replaced by a new pen having cost price of Rs.70. ...
The average age of A and B is 21 years. If A is to be replaced by C, the average would be 20 years. The average age of C and A is 22 years. Find the age...
In a cricket match the captain of one of a team scored 27 runs more than the average runs scored by the remaining 7 batsmen of that team who batted in t...
The average number of sweets distributed in a class of 90 students is 6. If lsquo;xrsquo; number of students newly joined the class and the average beco...
The average mark obtained by Khushi in four papers was 51, and in the fifth paper, she obtained 56 marks. Find his new average in all five papers.
The average cost price of articles 'P' and 'Q' together is Rs. 280, where the cost price of article 'Q' is Rs. 40 more than that ...
There are 15 numbers such that average of first 12 numbers is 25 while the average of last five numbers is 44. Find the 12th number, if the ratio betwee...
The average of four numbers is 90. Two of the numbers are equal (not least), and 40 more than the least number. If the 4th number is five times the leas...
