Question 1: of the students in a school is girls. If the number of boys is , find the total strength of the school.
Let the strength of the school
Therefore the strength of the school students
Question 2: Geeta saves of her monthly salary. If she spends Rs. per month, what in her monthly salary?
Let the monthly salary be
Geeta spends of her salary
Or Monthly Salary
Question 3: In an Examination, a student secures mark to pass. Raul gets marks and fails by marks. What are the maximum marks?
Let the Maximum Marks
Then Maximum Marks
Question 4: of the students in a school remained absent on a day. If attended the school on that day, how many remained absent?
Let the total number of students in school be
of students attended the school
Therefore the number of students absent
Question 5: On increasing the price of the article by , it becomes Rs. . What was its original Price?
Let the original Price be
Then Original Price
Question 6: On decreasing the price of an article by , it becomes Rs. . What was the original price?
Let the original price be
Then Original Price
Question 7: Reenu reduced her weight by . If she now weighs kg, what was her original weight?
Let Reenu’s original weight be
Then Original weight.
Question 8: Two candidates contest an election. One of them secure votes and won the election by a margin of votes how many votes were polled in all
Let the total no. of votes polled be
Question 9: In an examination, Preety scored out of in sciences, out of in mathematics, out of in Hindi and out of in English
In which subject the performance is worst?
In which subject the performance is best?
What is her aggregate percentage of marks?
Let’s first calculate % marks in each subject
Worst performance is in English
Best performance is in Math.
Question 10: The price of an article is increased by . By how much must this new price be decreased to return to its formal value?
Let the price of the article be
Let % to be decreased to restore it to formal value be
Therefore the new price must be decreased by 20%
Question 11: The price of an article is reduced by by how much this value be increased to restore it to its formal value?
Let the value of the article be
Let us increase the price by
Question 12: The price of the tea is increased by . By how much a housewife should reduce the consumption of tea so as not to increase the expenditure on tea?
Let the price of the tea
Let the consumption be decreased by
Question 13: A man gave of his money to his elder son and of the remainder to younger son. Now, he is left with Rs. . How much money he had originally?
Let the man have
Money given to his elder son
Money given to younger son
Total money left
Question 14: of the population of a town was killed in an earthquake and of the remainder left the town. If the population of the town now is , what was the population at the beginning?
Let the initial population be
People left after earthquake
The initial population people
Question 15: A and B are two towers. The height of the tower A is less than that of tower B. How much percent is B’s height more than that of A?
Let the height of tower B
Height of tower A
% of B’s height more than A
Question 16: In an examination, of the candidates failed in English, fail in G.K. and failed in both the subjects. If passed in both, how many candidates appeared in the examination
Percentage of student failed in English
Percentage of students failed in G.K.
Percentage of students failed in both
Let the total number of candidates be
% of students failed in English
% of students failed in G.K.
% of students failed in one or both subjects
Question 17: The value of a car depreciates annually by . If the present value of car be Rs. , find the value of car after two years.
Let the value of car Rs.
Value of car after 1 year
Value of car after 2 years
Question 18: The population of village increased by every year. If the present population is then what will be the population after years?
Population after years
Question 19: A student was asked to multiply a number by . He multiplied by instead. Find the error in calculation.
Let the number be
The right answer is
Question 20: In an election between two candidates, of the votes did not cast their votes. of the votes polled were found invalid. The successful candidate got of the valid votes and won by the majority of votes. Find the number of votes enrolled on the voters list
Let the number of voters be
No. of voters who did not cast vote
No. of votes found invalid
No of votes Successful candidate got
No of votes the other candidate got