63.5
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It is 1.
Go to the second decimal place; if it is less than 5; round down. If it is 5 or greater, round up. So, 1.51 rounded to 1 decimal place is 1.5.
You would round it up to 17.8
3.3 rounded to 1 decimal place is 3.0.
The .05 will round up, giving 22.1 as the answer.