Solve the following Problem:
The average age of a committee of 8 members is 40 years. A member aged 55 years retired and his place was taken by another number aged 39 years. What will be the average age of the present committee?
The ratio of the salary of A, B & C is 7: 5: 3. If B gets Tk. 222 more than what C gets, then what is the salary of A?
M can do a piece of work in 40 days. He works at it for 5 days and then N alone finishes the remaining work in 42 days. The two together could complete the work in how many days?
In a shop, the cost of 4 shirts, 4 pairs of trousers and 2 hats is Tk. 560. The cost of 9 shirts, 9 pairs of trousers and 6 hats is Tk. 1,290. What is the total cost of 1 shirt, 1 pair of trousers and 1 hat?