Distance from a place A to another place B is 200 km. A car takes 3½ hours to go from A to B and 4½ hours to return from B to A. What is the average speed of the car in the whole journey?
Read the following instructions and answer the questions given below
A and B are friends and their age differ by 2 years. A’s father D is twice as old as A and B is twice as old as his sister C. The age of D and C differ by 40 years.
How much older is A than B ?
How old is B?
How old is A?
6 is the first perfect number. What is the next perfect number?
A number when divided by 14 leaves a remainder 9. If the same number is divided by 7, what can be the remainder?
