Is this really the toughest Mathematics question for class 10 of CBSE?
CBSE (Central Board of Secondary Education) is a national-level education board in India controlled by Union Government of India for private and public schools. From 2018, CBSE decided to conduct Board exams for students of class 10 and class 12. Question papers for students come from CBSE only where they make sure that they follow certain rules to make the question papers. For example, question papers should be based on NCERT books only.
In Mathematics for class 10, the question paper is made in reference to NCERT book only.
If we look upon this book, we see quite number of questions. It depends on person to person, which question seems easy or difficult to one. Though, all questions are easy for everyone if one gives his/her best and studies thoroughly. Some people may be able to solve a particular question whereas some may not. Still, if you go just by CBSE NCERT Mathematics book of class 10, then the most rated question in terms of difficulty is the question 9 from exercise 4.3 of chapter 4 Quadratic Equations which is ‘Two water taps together can fill a tank 9 and 3/8 hours. The tap of larger diameter takes 10 hour less than the smaller one to fill the tank separately. Find the time in which each tap can separately fill the tank.’ Though, it is not so difficult but students find hard to understand and make equations to solve it. Many of the students study this and when it comes to solving, they forget it. This question can be solved like this:
Let the time taken by the smaller diameter tap = x
larger = x-10
total time taken = 75 /8
portion filled in one hour by smaller diameter tap = 1/x
and by larger diamter tap = 1/x-10
1/x + 1/x-10 = 8/75
x-10+x/x(x-10) = 8/75
2x+10/x²-10x = 8/75
8(x²-10x) = 75 ×2 (x-5)
8/2 (x²-10x) = 75 (x-5)
4x²-40x = 75x-375
4x² -40x-75x +375 = 0
4x²-115x + 375 = 0
4x²-100x-15x +375 = 0
If x= 25
the x-10 = 25-10 = 15
if x = 15/4
x-10 = 15/4 – 10 = 15-40/4 = -25/4
since time cannot be negative therefore x = 25
Answer courtesy: Brainly
Read it on Brainly.in: https://www.brainly.in/question/1140364/
This piece of writing will help the internet viewers for building up new blog or
even a blog from start to end.
I would be happy to see others getting inspired from this site and even learning from the content I post. Thank you!
If some one wants to see a hot website, it is yours!
HAHA! Thank you mate.
I blog often and I seriously appreciate your content.
This article has really peaked my interest.
I am going to book mark your blog and keep checking for
new information about once per week. I subscribed to you as well.
Thank you brother. I will surely visit your website too.
Education system of India might change. Read more: http://theprofoundreport.com/2020/08/05/new-education-policy-2020-explained/
Great, everything is very good…
very appropriate post
Thank you for that remark. Stay tuned for more.
Hey! Do you use Twitter? I’d like to follow you if that would be ok. I’m absolutely enjoying your blog and look forward to new updates.|
Indeed. Follow me: https://twitter.com/DhruvShahrawat