The average of five consecutive integers is X. If the next two numbers are added, how shall the average vary?

A school has only the classes having 20, 30 and 40 students respectively. The percentages of students passed a...

A plane traveling at 600 miles per hour is heading for Chittagong airport. At 3.58 pm it was 30 miles from the...

If a 240-metre-long metro rail passes a pole in 24 seconds, how long will it take to pass a 650-metre-long pla...

The daily rate for a hotel room that sleeps 4 people is Tk. 390 for one person and X taka for each additional...

The value of a machine is Tk.6250. Its value decreases by 10% during the first year, 20% during the second yea...

The average temperature for the first 4-days of a week is 40,2º C and that of the last 4-days is 41.3°C. If th...