A tank is 25 m long, 12 m wide and 6 m deep. The cost (in Rs) of plastering its walls and bottom at Rs. 10 per m 2 is:
A' can complete 40% of a work in 6 days, while ‘B’ can complete the work in \(7\tfrac{1}{2}\) days. If they work together, then in how many days will the work be completed?
A car travels a distance of x km at a speed of \(5\tfrac{5}{9}\)m/sec and returns at 5 m/sec to the starting point. If the total time taken by the car is \(7\tfrac{3}{5}\)hours, then the value of (x + 3) is:
Study the following graph that shows the number of boys and girls who appeared for the Class X examination in a school XYZ, in different years.
The average of the number of boys who appeared in 2011, 2013, and 2015 is what percentage less than the number of girls who appeared in 2014?