Q.1 36% of the students in a school is girls. If the number of boys is 1440, find the total strength of the school.
Let the strength of the school
Therefore the strength of the school = 2250 students
Q.2 Geeta saves 18% of her monthly salary. If she spends Rs.10250 per month, what in her monthly salary?
Let the monthly salary be
Geeta spends of her salary
Or Monthly Salary
Q.3 In an Examination, a student secures 40% mark to pass. Raul gets 178 marks and fails by 32 marks. What are the maximum marks?
Let the Maximum Marks
Then Maximum Marks
Q.4 8% of the students in a school remained absent on a day. If 1633 attended the school on that day, how many remained absent?
Let the total number of students in school be
% of students attended the school = 92%
Therefore the number of students absent
Q.5 On increasing the price of the article by 14%, it becomes Rs.1995. What was its original Price?
Let the original Price be
Then Original Price
Q.6 On decreasing the price of an article by 6%, it becomes Rs.1551. What was the original price?
Let the original price be
Then Original Price
Q.7 Reenu reduced her weight by 15%. If she now weighs 52.7 kg, what was her original weight?
Let Reenu’s original weight be
Then Original weight.
Q.8 Two candidates contest an election. One of them secure 58% votes and won the election by a margin of 2560 votes how many votes were polled in all
Let the total no. of votes polled be
Q.9 In an examination, Preety scored 60 out of 75 in sciences, 84 out of 100 in mathematics, 36 out of 50 in Hindi and 30 out of 45 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.
Q.10 The price of an article is increased by 25%. 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%
Q.11 The price of an article is reduced by 10% 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
Q.12 The price of the tea is increased by 20%. 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
Q.13 A man gave 35% of his money to his elder son and 40% of the remainder to younger son. Now, he is left with Rs. 11700. How much money he had originally?
Let the man have
Money given to his elder son
Money given to younger son
Total money left
Q.14 5% of the population of a town was killed in an earthquake and 8% of the remainder left the town. If the population of the town now is 43700, what was the population at the beginning?
Let the initial population be
People left after earthquake
The initial population =50,000 people
Q.15 A and B are two towers. The height of the tower A is 20% 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
Q.16 In an examination, 30% of the candidates failed in English, 35% fail in G.K. and 27% failed in both the subjects. If 310 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
Q.17 The value of a car depreciates annually by 10%. If the present value of car be Rs. 650000, find the value of car after two years.
Let the value of car = 65000 Rs.
Value of car after 1 year
Value of car after 2 years
Q.18 The population of village increased by 7% every year. If the present population is 80,000 then what will be the population after 2 years?
Population after 2 years
Q19. 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
Q.20 In an election between two candidates, 10% of the votes did not cast their votes. 10% of the votes polled were found invalid. The successful candidate got 54% of the valid votes and won by the majority of 1620 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