Janak started from his office and after travelling a distance of 4 km towards north, he turned to the left and travelled a distance of 3 km. He then turned left and travelled 9 km. He then took a final left, travelled 3 km and stopped. What is the shortest distance between the stopping point and his office? (All turns are 90 degree turns only.)
The magnification produced by a concave mirror is found to be –2 when an object of height 1 cm is placed at a suitable distance from the pole. Here, image height is equal to:
The following graph shows the profit earned by a company over the years. Study the graph and answer the question that follows.
Calculate the increase in profit earned by the company in year 2002 as compared to the previous year.
The traffic signals at three different road crossings change after every 45 seconds, 75 seconds and 90 seconds respectively. If they all change simultaneously at 9:30:00 a.m., then at what time will they next change again simultaneously?
Two pipes A and B can fill a cistern in 21 minutes and 28 minutes, respectively. Both the pipes are opened together but after 4 minutes, pipe B is turned off. What is the total time taken to fill the tank?
