Fraction and Simplification, Average and Mean

The average wage of a worker during a fortnight comprising 15 consecutive working days was Taka 90 per day. During the first 7 days, his average wage was Taka 87 per day and the average wage during the last 7 days was Taka 92 per day. What was his wage on the 8th day?

In a group of 135 persons, 50% people contributed tk. 40 each, 30% contributed Tk. 60 each and the remaining persons contributed Tk. 80. Find the average contribution for the group?

The average of several exam scores is 80. One make-up exam was given. Included with the other scores. The new average was 84. If the score on the make up exam was 92, how many total exams were given?

Set A contains all the even numbers between 2 and 50 inclusive. Set B contains all the even numbers between 102 abd 150 inclusive. What is the difference between the sum of elements of set B and that of set A?

The average attendance of a college for the first three days of a week is 325 and the first four days is 320. How many were present on the fourth day?

If you are living near a market place you should be read a market place you should be ready to bear the disturbances caused by traffic.

10, 4, 26, 16 what is the median of the numbers shown?

The average of 6 numbers is 25. If 3 more numbers, with an average of 22 are added to these numbers, what will be the average of the combined 9 numbers?

The average of three numbers is P. If two numbers of them are R and S. What is the 3^rd number?

The average of smallest and largest primes between 60 and 80 is -