Question

1. Find the ratio:
a) Rs.2 to 20 paise b) 20 g to 2kg
c) 3kg to 60 g d) 10 cm to 1m
2. Convert the given decimals to per cents:
(a) 0.75 (b) 0.09 (c) 0.2
3. Write 1/3 as per cent.
4. Out of 25 children in a class, 15 are girls. What is the percentage of girls?
5. Convert 5/4 to percent
6. Out of 32 students, 8 are absent. What per cent of the students are
absent?
7. There are 120 voters, 90 of them voted yes. What per cent voted yes?
8. A survey of 40 children showed that 25% liked playing football. How
many children liked playing football?
9. Find:
(a) 50% of 164 (b) 75% of 12
10. 8% children of a class of 25 like getting wet in the rain. How many
children like getting wet in the rain.
11. Convert the following percents to decimal fractions and also to
fractions in simplest form:
(a) 40 % (b) 75 %
12.Find the whole quantity if
(a)50 % of it is Rs. 200 (b) 30 % of it is 1200 kg
13. A school team won 6 games this year against 4 games won last year.
What is the per cent increase?
14. Find Percentage of increase or decrease:
a) Price of shirt decreased from Rs 80 to Rs 60.
b) Marks in a test increased from 20 to 30.
15. The cost of a flower vase is Rs 120. If the shopkeeper sells it at a loss
of 10%, find the price at which it is sold.

16. A shopkeeper bought a chair for Rs 300 and sold it for Rs 400. Find the
gain percentage.
17. Cost of an item is Rs 50. It was sold with a profit of 12%. Find the selling
price.
18. Convert each part of the ratio to percentage:
(a) 1:4 (b) 2:3:5
19. Anita takes a loan of Rs 5,000 at 15% per year as rate of interest. Find
the interest she has to pay at end of one year.
20. Rs 10,000 is invested at 5% interest rate p.a. Find the interest at the
end of three years.
21. A school has 2000 students, 5% of the students belong to class XII, 2%
are in class X. Find the number of students who belong to class X and XII.

Answer 1

Answer:

ANSWER

Let the polynomial to be subtracted be p(x).

∴x

3

−3x

2

+5x−1−p(x)=2x

3

+x

2

−4x+2

x

3

−2x

3

−3x

2

−x

2

+5x+4x−1−2=p(x)

∴p(x)=−x

3

−4x

2

+9x−3