In an elementary school, the average age of students is 8 years and that of 12 teachers is 45 years. If the average age of all is 9 years, then what are the number of students?
Mahesh buys 3 shirts at an average price of Rs. 1250. If he buys 2 more shirts at an average price of Rs. 1450, what will be the average price (in Rs) of all the 5 shirts he buys?
1). 1370
2). 1330
3). 1310
4). 1390
The average expenditure of Raman for 5 days is Rs. 130. If his expenditure for the first 4 days is Rs. 100, Rs. 125, Rs. 85 and Rs. 160 respectively, then what is his expenditure (in Rs) of the 5th day?
The average of first three out of four numbers is 18. The average of the last three numbers is 14. The sum of the first and last number is 16. The last number is
1). 17
2). 13
3). 9
4). 2
A batsman makes a score of 95 runs in the 13th match and thus increases his average runs per match by 4. What is his average after the 13th match?