Question 44
Back to Exercise
In a note collection, there is one new ₹2000 note for every three old ₹500 notes. 10 more new ₹2000 notes are added to the collection and the ratio of new ₹2000 notes to old ₹500 notes would be 1: 2. Based on the information, the total number of notes in the collection now becomes?
- A 60
- B 30
- C 70
- D 90 Correct
Correct Answer: Option D
Let 'x' be the number of new ₹2000 notes.
Given for one new 2000 note there are three old 500 notes.
=> 3x
Given 10 more new ₹2000 notes are added to the collection and the ratio of new ₹2000 notes to old ₹500 notes
=> x + 10 /3x = 1/2 => x = 20
Therefore, number of new ₹2000 notes => x+10 = 30.
Old ₹500 notes => 3x = 60.
Thus, the total number of notes in the collection => 30 + 60 = 90.
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