Discussion
A bill for Rs. 1840 is paid with the denominations of Rs. 50, Rs. 20 and Rs. 10 notes. 50 notes are used in all. Find the number of Rs. 50 notes.
Answer: B
This question is indeterminate as there could be multiple combinations. Let x, y, z be the number of notes of 50, 20, 10. We have x+y+z=50 and 50x+20y+10z=1840. We have two equations and three variables. The question cannot be uniquely solved without more information. Let's assume there is a typo. If the question was: 'The number of Rs. 50 notes is 6 more than Rs. 20 notes'. Then x=y+6. z=50-x-y = 50-(y+6)-y=44-2y. 50(y+6)+20y+10(44-2y)=1840. 50y+300+20y+440-20y=1840. 50y+740=1840. 50y=1100. y=22. Then x=28, z=0. Total notes = 50. Let's check the value: 28*50 + 22*20 = 1400+440=1840. This works. So the number of Rs. 50 notes is 28. Let me adjust the question to include this constraint.
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