Test Preparation on Aptitude Test Preparation Part 42

1.

Find the ratio of 60cm to 80cm?

2.

Average of 13 numbers is 68, the average of first 7 numbers is 63 and the average of last 7 numbers is 70. Find the 7th number ?

3.

The average age of a class of 23 students is 15 years. A new student joined the class and the average age increased by 6 months. Find the age of the new student ?

4.

The train runs a distance of 240 km in 8 hrs at a certain speed. At ( 1 * ( 1 / 2 ) ) times the former speed, how much time will it take to cover 540 km?

5.

What is the ratio of 1kg to 100 gm? Since one is given in kg and the other is given in gm. We must convert the unit of one quantity to the unit of the other.