Question : What smallest positive number should be subtracted from 2 and 3 so that 4 is the third proportion to them?
Option 1: 1
Option 2: 2
Option 3: 4
Option 4: 3
Answer (1)
16th Jan, 2024
Correct Answer: 1
Solution :
Let the number subtracted be $x$.
$(2-x)$ : $(3-x)$ :: $(3-x)$ : $4$
⇒$\frac{(2-x)}{(3-x)} = \frac{(3-x)}{4}$
⇒$(3-x)^2 = 4(2-x)$
⇒ $x^2-6x+9 = 8-4x$
⇒ $x^2-2x+1=0$
⇒ $(x-1)^2=0$
⇒ $x = 1$
Hence, the correct answer is 1.
Comments (0)
Related Questions
Know More about
Staff Selection Commission Combined Grad ...
Result | Eligibility | Application | Selection Process | Preparation Tips | Admit Card | Answer Key
Get Updates Brochure
Thank You!
Your Staff Selection Commission Combined Graduate Level Exam brochure has been successfully mailed to your registered email id “”.
Upcoming Exams
Application Date:
9 Dec, 2024
- 30 Dec, 2024
Application Date:
2 Dec, 2024
- 31 Dec, 2024
Exam Date:
3 Jan, 2025
- 16 Jan, 2025
Admit Card Date:
23 Dec, 2024
- 5 Jan, 2025
Application Date:
15 Dec, 2024
- 5 Jan, 2025
