What is the sum and classification of 3/20 + √10 (sqrt of 10) ?

1) 3.31227766 ..., irrational

2) 3.31227766 ..., rational

3) 18.16227766 ..., irrational

4) 18.16227766 ..., rational

(not a multiple choice)

The sum of the digits is 11. The tens digit is one less than three times the ones digit. Find the original number]

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