Asim, Ismail, Farida, and Ijaz all celebrated their birthdays today. Asim is 5 years younger than Ismail, Ismail is 8 years older than Farida, and Ijaz is 4 years older than Asim. Which of the following could be the combined age of all of them today?
The front wall of a factory as shown below has to be painted. The area of the entrance shown in grey does not need to be painted. If the cost of painting is Tk20 per square m, find the total cost for painting the entire wall.