Discussion
On selling a watch for Rs. 810, Ravi gains 8%. For how much did he purchase it ?
Answer: C
Ravi bought the watch for Rs. 750.
A gain of 8% means the selling price is 108% of the cost price:
\[ \begin{aligned} 1.08 \times CP &= 810 \\ CP &= \frac{810}{1.08} = 750 \end{aligned} \]
Check: 8% of 750 is 60, and \(750 + 60 = 810\). The usual slip is to take 8% of the selling price, \(810 - 64.8 = 745.2\), which is not offered; 780, 760 and 786 give gains of under 4%, about 6.6% and about 3% respectively.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development