Answer:
Carl has 4 £10 notes
Step-by-step explanation:
The mean money they have is simply the sum of what they have divided by 3
If we multiplied the mean of what they have by 3, then we have the total of what they have
Let us have the total
Mean is £80 per person; so the total would be £80 * 3 = £240
By adding all they have, we have a total of 240
Let the number of £10 notes Carl has be n
Thus, his total amount would be;
3(5) + 20 + 10(n)
15 + 20 + 10n
= 35 + 10n
Adding what the rest had to it, we have a total of £240
thus, we have it that;
65 + 100 + 35 + 10n = 240
100 + 100 + 10n = 240
10n = 240-100-100
10n = 40
n =40/10
n = 4
