The straight distance between X and Y is 1000 meters. A taxi starts travelling from X at morning 8 o’clock. There is a taxi for every 30 minutes interval. Each taxi travels at a speed of 25 km/hr. A man travels from Y at a speed of 20 km/hr. If the man starts his journey at 2 pm, find the number of taxi he encounters in his journey.

Two buses are travelling at 36 kmph and are 120 km apart. There is a fly in one bus which starts to fly at 40 kmph when the bus is started. It flies between two buses until the buses meet each other. Find the distance travelled by the fly.

When you reverse the digits of age of father u will get the age of son. One year ago the age of father was twice that of sons age. What are the current ages of father and son?

A number is to be multiplied by the fraction 4/5. But Amit, by mistake multiplied it by 5/4 and obtained the number 81 more than the correct value. What was the original number?

A cube has a volume of 512 cubic meters. If each side is doubled in length what will be its new Volume in cubic meters?

A car left from a Place A at 8.12 am and reached the Place B, 180 miles distant at 11.57 am. What was its average speed in miles per hour?

If the average of three numbers is 135 and the difference between others is 25 then find the lowest number.

In a competitive exam, Ram got 10% less than Shyam who got 25% more than Mohan and Mohan got 20% less than Jawa. If the total marks were 500 and Ram got 360.What was Javas percentage?

A and B can do a piece of work in 18 and 9 days respectively. A does the work for a few days and left, then B continued for 6 days. How many days did A and B work together ?

A person walks on a plain land at 4 km/hr. and up the slope at 3 km/hr. and comes down at 6 km/hr. and walks on the plain land again at 4 km/hr. if he started at 3:00 pm and comes back at 9:00 pm. What is the one-way distance?