Answer:
Total number of sheep Jake have = 542.
Explanation:
Jake has number of sheep = 540 (rounded to the nearest ten).
As per rule, "we round the number down to the nearest ten if the last digit of the number is between 0 to 5".
So the number of sheep with Jake may be between 540 to 545.
It is also given in the question that the sum of digits of the number is 11, so the number will be,
5 + 4 + x = 11 (Here x = last digit of the number)
9 + x = 11
x = 11 - 9
x = 2
Therefore, total number of sheep with Jake is 542.