In a class, there are 18 boys who are over 160 cm tall. If these constitute threefourths of the boys and the total number of boys is twothirds of the total number of students in the class, what is the number of girls in the class?
A father is now three times as old as his son. Five years back, he was four times as old as his son. The age of the son (in years) is
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A waiter's salary consists of his salary and tips. During one week his tips were 5/4 of his salary. What fraction of his income came from tips?
If you write down all the numbers from 1 to 100, then how many times do you write 3?
If 100 cats kill 100 mice in 100 days, then 4 cats would kill 4 mice in how many days?
Five bells begin to toll together and toll respectively at intervals of 6, 5, 7, 10 and 12 seconds. How many times will they toll together in one hour excluding the one at the start?
A bus starts from city X. The number of women in the bus is half of the number of men. In city Y, 10 men leave the bus and five women enter. Now, number of men and women is equal. In the beginning, how many passengers entered the bus?
A, B, C, D and E play a game of cards. A says to B, "If you give me 3 cards, you will have as many as I have at this moment while if D takes 5 cards from you, he will have as many as E has." A and C together have twice as many cards as E has. B and D together also have the same number of cards as A and C taken together. If together they have 150 cards, how many cards has C got ?
A farmer built a fence around his square plot. He used 27 fence poles on each side of the square. How many poles did he need altogether?
In a city, 40% of the adults are illiterate while 85% of the children are literate. If the ratio of the adults to that of the children is 2 : 3, then what percent of the population is literate?
A is three times as old as B. C was twiceas old as A four years ago. In four years' time, A will be 31. What are the present ages of B and C?
Today is Varun's birthday. One year, from today he will be twice as old as he was 12 years ago. How old is Varun today?
A bird shooter was askgd how many birds he had in the bag. He replied that there were all sparrows but six, all pigeons but six, and all ducks but six. How many birds he had in the bag in all?
Mr. Johnson was to earn £ 300 and a free holiday for seven weeks' work. He worked for only 4 weeks and earned £ 30 and a free holiday. What was the value of the holiday?
What is the smallest number of ducks that could swim in this formation  two ducks in front of a duck, two ducks behind a duck and a duck between two ducks?
215 videos139 docs151 tests

215 videos139 docs151 tests
