Answer:
1 hour
Step-by-step explanation:
3 hours subtract 2 hours
To find the percentage,here's what we can do:

The percentage would then be:
=63/420×100%
=3/20×100%
=0.15×100%
=15%
Therefore the answer is 15%.
Hope it helps!
<span>Best you can do is describe a set:
John
</span>
3 3/4
= 3+ 3/4
= 3+ 0.75
= 3.75
The length as a decimal is 3.75 m~
The correct answer is 7/9