Bissoy.com
Doctors Medicines MCQs Q&A

The difference between the length and the breadth of a blackboard is 8 cm. If the breadth is decreased by 4 cm and the length is increased by 7 cm the areas remains the same. Find the dimensions of the blackboard?

The difference between the length and the breadth of a blackboard is 8 cm. If the breadth is decreased by 4 cm and the length is increased by 7 cm the areas remains the same. Find the dimensions of the blackboard? Correct Answer 28,20

Related Questions

The length of a rectangular blackboard is 8 m more than its breadth. If its length is increased by 7 m and its breadth is decreased by 4 m, its area remains unchanged. The length and breadth of the rectangular blackboard is :
With reference to the Indian economy after the 1991 economic liberalization, consider the following statements: 1. Worker productivity (Rs. per worker at 2004-05 prices) increased in urban areas while it decreased in rural areas. 2. The percentage share of rural areas in the workforce steadily increased. 3. In rural areas, the growth in the non-farm economy increased. 4. The growth rate in rural employment decreased. Which of the statements given above is/are correct?
The length of a rectangular board is 15 cm more than its breadth. If the length is increased by 9 cm and the breadth is decreased by 6 cm, the area of the board remains the same as before. What is the ratio between the original length and breadth of the board?
The teacher asked a class of fifth-grade students to find the average of 15 different two-digit numbers displayed on the blackboard. After the students finished the exercise, the teacher wrote the correct answer on the blackboard. Ankit, in an attempt to impress the teacher, claimed that he could reverse the digits of one of the numbers so that the new number also was a two-digit number, and the average he would get would be 2.4 more than the result displayed. What is the probability of Ankit finding such a number on the blackboard?
The teacher asked a class of fifth grade students to find the average of 15 different two-digit numbers displayed on the blackboard. After the students finished the exercise, the teacher wrote the correct answer on the blackboard. Ankit, in an attempt to impress the teacher, claimed that he could reverse the digits of one of the numbers so that the new number also was a two-digit number, and the average he would get would be 2.4 more than the result displayed. What is the probability of Ankit finding such a number on the blackboard?
Output of a bulldozer is (i) Increased if drawbar HP of the tractor is increased for a given hauling distance (ii) Decreased if drawbar HP of the tractor is increased for a given hauling distance (iii) Increased if the hauling distance is increased for a given drawbar HP of the tractor (iv) Decreased if the hauling distance is increased for a given drawbar HP of the tractor
Output of a bulldozer is
(i) Increased if drawbar HP of the tractor is increased for a given hauling distance
(ii) Decreased if drawbar HP of the tractor is increased for a given hauling distance
(iii) Increased if the hauling distance is increased for a given drawbar HP of the tractor
(iv) Decreased if the hauling distance is increased for a given drawbar HP of the tractor
When the dimensions of a rectangle, having length and breadth of 25 cm and 16 cm respectively, were increased, its area increased by 62.5%. If the length was increased by 1 cm, find the increase in the breadth of the rectangle.
When the dimensions of a rectangle, having length and breadth of 14 cm and 8 cm respectively, were increased, its area increased by 86.6%. If the length was increased by 5 cm, find the increase in the breadth of the rectangle.
In the following question, two statements are numbered as A and B. On solving these statements we get quantities A and B respectively. Solve for the both quantities and choose the correct option. Quantity A: If the length and breadth of a rectangle is decreased by 8% and 5% respectively, by what percentage will the area of the rectangle be decreased? Quantity B: If the side of a square is decreased by 6%, by what percentage will the area of the square be decreased?