The length and breadth of a square of a are increased by 40% and 30% receptively. The area of the resulting rectangle exceeds the are of the square by?

A 62%
B 42%
C 82%
D None of the above

Correct Answer: 82%

Let, length is = x so, area is = x2 40% increase in length = x + 2x/5 = 7x/5 30% increase in breadth = x + 3x/10 = 13x/10 Area = (7x/5)×( 13x/10) = 91×2/50 Increasing area = (91×2/50) - x2 = 41×2/50 Percentage = {(41×2/50) x2}×100 = (41/50)×100 = 82%
Bissoy MCQ
#গণিত #শতকরা (Percentage) #Sonali Bank Ltd #Sonali Bank Ltd - Assistant Programmer - 26.08.2016

Related Questions

The length of a rectangle is twice its breadth . If its length is decreased y 5 cm and breadth is increased by 5 cm , the area of the rectangle is increased by 75 sq. cm . Find the length of the rectangle.
A 20 cm
B 25 cm
C 30 cm
D Try your self
If the length of rectangle A is one -half of the length of rectangle B , and the width of rectangle A is one -half of the width of rectangle B, what is the ratio of the area of rectangle A to the area of rectangle B?
A 1/4
B 1/2
C 1/1
D 2/1
The length and breadth of a square are increased by 40% and 30% respectively. The area of the resulting rectangle exceeds the area of the square by :
A 76%
B 82%
C 50%
D 41%
The length and breadth of a square are increased by 40% and 30% respectively. The area of the resulting rectangle exceeds the area of the square by?
A 62%
B 42%
C 82%
D None of the above
If the length of rectangle A is one-half the length of rectangle B, and the width of rectangle A is one-helf the width of rectangle B, what is the ratio of the area of rectangle A to the are of rectangle B?
A 1/4
B 1/2
C 1/1
D 2/1
The length of a rectangle is 20% more than its breadth . Find the ratio of the area of the rectangle to that of the square whose side is equal to the breadth of the rectangle .
A 8 : 9
B 3 : 2
C 6 : 5
D 2 : 1
If the length of rectangle B and the width of rectangle A is one-half the width of rectangle B, what is the ratio of the area of rectangle A to the area of rectangle B?
A 1/4
B 1/2
C 1/1
D 2/1
The length and breadth of a rectangle are 24 meters and 12 meter respectively. By what percent the area of the rectangle will increase if its length and breadth are increased by 6%?
A 11.36
B 12.30
C 12.36
D 12.58
The length of a rectangle is 18 cm and its breadth is 10 cm, When the length is increased to 25 cm, what will be the breadth of the rectangle if the area remains the same?
A 7 cm
B 7.1 cm
C 7.2 cm
D 7.3 cm
The length of a rectangle is twice than that of its breadth. If the length of the rectangle is increased by 10%, while its breadth is decreased by 10% what is the percentage change in the perimeter ?
A 3 1/3%
B 3 2/3%
C 4%
D No change

Next steps