Calvin scores 92, 93, 94 and 97 marks for English, Science, Chinese and Mathematics respectively in the first semestral assessment. What is Calvin’s average marks for these four subjects ?

Two trains start their journeys from the same station but in the opposite direction. How far apart are the two trains right after 5 hours if one travels at 60 kilometres per hour and the other travels at 70 kilometres per hour ?

Town A and Town B are 900 kilometres apart. A car that travels at 80 kilometres per hour leaves Town A for Town B. At the same time, another car leaves Town B for Town A at 70 kilometres per hour. When will the two cars meet ?

Port A and Port B are 250 kilometres apart. Two ships depart from Port A and Port B respectively at the same time. The two ships sail towards each other and meet 10 hours later. What is the speed of the other ship if one of the ships travels at 12 kilometres per hour ?

Two cyclists start their journeys from the same place but in the opposite direction. Their speeds are 250 and 200 metres per minute respectively. How far are they apart after 5 minutes ?

Town A and Town B are 1010 km apart. A car leaves Town A for Town B at a speed of 80 km/h. Two hours later, another car leaves Town B for Town A at a speed of 90 km/h. When will the two cars meet each other ?

A car travels faster than a van by 20 km/h. Both vehicles are 1100 km apart before they start to travel to awards each other.  Find the speed of each vehicles if they meet five hours late.

The library and the school are 660 m apart. Dianne walks from the school towards the library at a speed of 60 m/min. Lawrence walks from the library towards the school at a speed of 50 m/mn. How far apart are they after 8 min ?

A truck travelled from Town A to Town B. A van travelled from Town B to Town A at the same time. They met 10 km from the middle of the journey. Find the distance between Town A and Town B if the truck and the van travelled at 65 km/h and 60 km/h respectively.

A truck left Town A for Town B at a speed of 80 km/h. Two hours later, a car travelling at 120 km/h also left Town A for Town B. The car caught up with the truck 30 km away from Town B. Find the distance between the two towns.

Alvin jogs at 12 km/h. Ben jogs at 10 km/h. If Ben jogs 15 more minutes than Alvin, he can cover 1.5 km more. What is the distance covered by Ben ?

Count the total number of squares in the figure below.

In how many different ways can you place four beads, one in a box, so that there s only one bead row and each column ?

How many different ways can a beetle find its way to Point B from Point A ?

Assume it can only move in the directions of       

How many different ways are there to go from A to B if only movements in the directions of  are allowed ?