CLEAR
Toprankers-Info

+91 7676564400

Mobile App

Get it on Google Play
Discussions
Select Date
Tags:

Articles

Discussions
Submit Discussion
ANKIT RATHAUR

· started a discussion

· 1 Months ago

wrong (Question: 99633.0 )

please modify this question

Question:
The ratio between the length and breath of a room is 5:3 The cost of white washing the ceiling of the room at 50 P per square m is \(\unicode{x20B9} \)270 and the cost of painting the walls at 10 P per square metre is \(\unicode{x20B9} \) 48. The height of the room is:
Options:
A) 6 m
B) 8 m 
C) 5 m
D) 10 m
Solution:
Area of ceiling = \(\cfrac{Total cost}{cost of 1 sq.unit}\)

\(=\cfrac{270}{0.5}\) = 540 sq. m

Now since l: b = 5x: 3x

⇒ l × b = 15x2 = 540 m2

⇒ l =30 and b = 18m

Now, Area of the 4 wails = \(\cfrac{Total cost}{cost of 1 sq.unit}\)     \(\cfrac{48}{0.1}\) = 480 m2

∴ Height = \(\cfrac{480}{2(30 + 18)}= 5 m.\)

ANKIT RATHAUR

· commented

· 1 Months ago

@Sohil Rajput mind ur language

Sohil Rajput

· commented

· 1 Months ago

kuch modify nahi hoga karna hain karo nahi aage nikal
-logo
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
-Info
-Info

Mobile App

Get it on Google Play
About Us Campus Ambassador Careers Contact Us Refund Policy

All Rights Reserved Top Rankers

User Policy
Disclaimer
Terms & Conditions