Login / Signup

Question

The average number of books on history, polity and geography in a library is 140, and the average number of books on history and geography is 150. If the number books on geography is 20% less than the number of books on polity, then what is the number of books on history in the library?

A 214

B 224

C 204

D 164

E None of these

Practice Next

More Average Questions

The average weight of five students in a class is recorded as 58 kg. Two of the students have weights of 48 kg and 54 kg, but their actual weights are 45 ...
The average salary of 5 employees is ₹60,000. If the highest and lowest salaries are excluded, the average becomes ₹58,000. The lowest salary is ₹40,000. F...
Average of five consecutive numbers is 48. Find the sum of smallest and largest number.
The average speed of 20 vehicles during a survey was noted as 60 km/h. Later it was observed that one speed was wrongly taken as 72 km/h instead of 62 km/h...
The average of n numbers is 64. If each of 56% of the numbers is increased by 15 and each of the remaining numbers is decreased by 10, then the new average...
A car covers a distance of 60 km at a consistent speed. If the car's speed is increased by 8 km/h, it would take 2 hours less to travel the same distance. ...
The average of series 'S2', which consists of 6 consecutive even numbers, is 29. The second term of series 'T2', which consists of 5 consecutive odd number...
30 students go for a picnic. 15 of them spent Rs. 64 each on their food and rest spent Rs.5 more than the average expenditure of all 30. What was the total...
A set contains ten numbers. The average of the first six numbers is (x - 2), and the average of the last three numbers is (x + 4). The average of the entir...
The average age of 4 children in a family is 30% of the average age of the mother and the youngest child. The total age of the father and the eldest child ...

Relevant for Exams:

Hey! Ask a query

ask-question