21.
The breadth of a rectangular field is 60% of its length. If the perimeter of
the field is 800 m.What is the area of the field?
A.
18750 sq.m B. 37500 sq.m
C.
40000 sq.m D. 48000 sq.m
22.
The diagonal of a rectangle is 41 cm and its area is 20 sq. cm. The perimeter
of the rectangle must be:
A.9
cm B.18 cm
C.20
cm D.41 cm
23. If each side of an equilateral triangle
is 4 cms then find its area?
a. 6.751
sq cm
b. 4.143
sq cm
c. 6.928
sq cm
d. 5.349
sq cm
24. The base and side of an isosceles
triangle is 10 cms and 13 cms respectively then find its area?
a. 30
b. 50
c. 40
d. 60
25. If perimeter and diagonal of a
rectangle are 14 cm and 5 cm respectively find its area?
26. A
man divides Rs.8600 among 5 sons,4 daughters and 2 nephews. If each daughter
receives four times as much as each nephew, and each son receives five times as
much as each nephew, how much does each daughter receive?
27.
Kumar spends 75% of his income. His income is increased by 20% and he increased
his expenditure by 10%. Find the percentage increase in his savings.
28 A man sells an article at a profit of 25%.
If he had bought it at 20% less and sold it for Rs.10.50 less, he would have
gained 30%. Find the cost of the article.
29. A is twice as good as workman as B and
together they finish a piece of work in 18 days. In how many days will A alone
finish the work?
30. Two pipes A and B can fill a tank in 36
min. and 45 min. respectively. A water pipe C can empty the tank in 30 min.
First A and B are opened. After 7 minutes, C is also opened. In how much time,
the tank is full?
