1. 
The average wages of a worker during a fortnight comprising 15 consecutive working days was $ 90 per day. During the first 7 days, his average wages was $ 87/day and the average wages during the last 7 days was $ 92 /day. What was his wage on the 8^{th} day?



2. 
A wheel of a car of radius 21 cms is rotating at 600 RPM. What is the speed of the car in km/hr?



3. 
In the first 1000 natural numbers, how many integers exist such that they leave a remainder 4 when divided by 7, and a remainder 9 when divided by 11?



4. 
The average age of a group of 10 students was 20. The average age increased by 2 years when two new students joined the group. What is the average age of the two new students who joined the group?



5. 
If the sum of the interior angles of a regular polygon measures up to 1440 degrees, how many sides does the polygon have?




