Question 1
There are 12000 school children in a city. If 20% of the population are school children, what is the population of the city?
Question 2
How many solid spherical balls each of radius 1cm can be made out of solid metallic cube of edge 22cm?
Question 3
A sailor goes 8 km downstream in 30 minutes and returns in 40 minutes. The speed (in km/h) of the sailor in still water is
Question 4
. A is 15 years old and B is 20 years old. How many years ago was B twice as old as A?
Question 5
In a country the price of rice is increasing by 10% every year. At present the price of 5 quintals of rice is Rs.1000. After 3 years the price of 10 quintals of rice is expected to be
Question 6
10 examiners working 6 hours a day can check 1200 answer books in 6 days. At the same rate the number of days that 14 examiners would require to examine 2800 answer books working 5 hours a day is
Question 7
In a parliament the ratio of ruling party to the opposition parties was 7 : 3. Due to 18 members leaving the ruling party and joining the opposition, the ratio was changed to 3 : 2. What is the total strength of the parliament?
Question 8
There are 25 students in a class and one of them who is 14 years old leaves the class and his place is filled up by a newcomer; if the average age of the students is thereby lowered by one month, what is the age of the newcomer?
Question 9
If the length of a rectangle is increased by 50% and the breadth is decreased by 50%, by what percent is the area increased or decreased?
Question 10
World population doubles every 50 years. After 200 years from now, the population will be
Question 11
What is the percentage error, correct to three places of decimal , if 0.48 is written correct to one place of decimal?
Question 12
A bird flying 200 miles covers the first 100 miles at the rate of 200 miles per hour(mph) and the last 100 miles at the rate of 100 mph. Its average speed, in mph, is
Question 13
A and B walk at a rate of 5.5 and 6.5 km/h respectively. If they are walking towards each other and if the distance between them is 4 km, when will they meet?
Question 14
If ‘a’ be the length of each edge of a cube, what is the diagonal of the cube?
Question 15
Two railway stations A and B 800 km apart. Two trains starting from the opposite ends with equal speed will meet after