Question 1: of the students in a school is girls. If the number of boys is
find the total strength of the school.
Answer:
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?
Answer:
Let the monthly salary be
Geeta spends of her salary
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?
Answer:
Let the Maximum Marks
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?
Answer:
Let the total number of students in school be
of students attended the school
students
Therefore the number of students absent
Question 5: On increasing the price of the article by , it becomes Rs.
. What was its original Price?
Answer:
Let the original Price be
Original Price
Question 6: On decreasing the price of an article by , it becomes Rs.
. What was the original price?
Answer:
Let the original price be
Original Price
Question 7: Reenu reduced her weight by . If she now weighs
kg, what was her original weight?
Answer:
Let Reenu’s original weight be
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
Answer:
Let the total no. of votes polled be
Then
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?
Answer:
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?
Answer:
Let the price of the article be
New price
Let % to be decreased to restore it to formal value be
Therefore the new price must be decreased by
Question 11: The price of an article is reduced by by how much this
value be increased to restore it to its formal value?
Answer:
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?
Answer:
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?
Answer:
Let the man have
Money given to his elder son
Money left
Money given to younger son
Total money left
Hence
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?
Answer:
Let the initial population be
People killed
People left after earthquake
Hence
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?
Answer:
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
Answer:
Hence
Students
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.
Answer:
Question 18: The population of village increased by every year. If the present population is
then what will be the population after
years?
Answer:
Population after years
Question 19: A student was asked to multiply a number by . He multiplied by instead. Find the error in calculation.
Answer:
Let the number be
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
Answer:
votes
Good.but some answers have mistakes.please update and give correct answers
Could you point me to the question number(s) that need to be checked.
We cross checked. The answers are correct. If you can be more specific it would help.