It would be rounded up to 2.0
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1.99 would have to round up to 2.0. Because both of the digits cannot round up any more before going up to the next whole number, you have to round up to 2.0.
6.4
3.91 rounded off to one decimal place = 3.9
21.99 rounded to one decimal place
61.6 is the answer
37.7