Final answer:
To find out how many £10 notes Carl has, we calculate the total money that should be held by all three (Akhtar, Ben, and Carl), which is £80 times 3 people, equaling £240. Subtracting Akhtar's and Ben's money and Carl's other notes, we find Carl should have £40 left in £10 notes. Dividing this by 10 reveals that Carl has four £10 notes.
Step-by-step explanation:
The question is about determining the number of £10 notes Carl has, given the mean amount of money held by Akhtar, Ben, and Carl. We are provided with the following information:
- Akhtar has £65
- Ben has £100
- Carl has three £5 notes and one £20 note
- The mean amount per person is £80
Firstly, let's calculate the total money that should be held by all three:
Mean Amount × Number of People = Total Money
Mean Amount (£80) × 3 (people) = £240
Now, let's find out how much Carl has without his £10 notes:
Total Amount Carl has = (3 × £5) + £20
Total Amount = £15 + £20 = £35
The remaining money which will be in £10 notes is:
£240 (Total Money) - (£65 + £100 + £35)
Remaining Money = £240 - £200
Remaining Money = £40
To find out how many £10 notes make up £40, we divide the remaining money by 10:
Number of £10 notes = Remaining Money / 10
Number of £10 notes = £40 / 10
Number of £10 notes = 4
Therefore, Carl has four £10 notes.