any shortcut? (Question: 271993.0 )

Online Courses

Offline Courses

Test Series

Resources

Join Us

+91 7676564400

support@toprankers.com

Mobile App

Mock Tests

Practice

Assignment

Study Notes

SSC Articles

Discussions

Online Coaching

GK- Current Affairs

Bookmarked Questions

Descriptive Papers

Discussions

Select Date

Tags:

Submit Discussion

Abhishek

· started a discussion

· 1 Months ago

any shortcut? (Question: 271993.0 )

can anyone explain any shortcut or trick?

Abhishek

· started a discussion

· 1 Months ago

any shortcut? (Question: 271993.0 )

can anyone explain any shortcut or trick?

Question:

In a rectangle, if the length is increased by 3 metres and breadth is decreased by 4 meters, the area of the rectangle is reduced by 67 sq metres. If length is reduced by 1 metre and breadth is increased 4 metres, the area is increased by 89 sq. cm. Find the perimeter of the rectangle.

Options:

84 m

76 m

94 m

88 m

Solution:

Ans: (c)

Let length = x m

Breadth = y m

Area = xy

xy – [(x + 3)(y – 4)] = 67

4x – 3y = 55 … (i)

(x – 1) (y + 4) – xy = 89

4x – y = 93 … (ii)

After solving equation (i) and (ii),

x = 28, y = 19

Perimeter of rectangle = 2(28 + 19) = 94 m

We at aim to provide most comprehensive content & test for practice which is carefully divided into various chapters and topics to help you focus on your weak areas.Our Practice mock test gives you unmatched analytics to help you realize your strong areas,time management and improvement areas.Our Short & Crisp notes on each topic will help you to quickly revise the topic along with the tips & tricks of the exams.

More About