Answer:
7
Step-by-step explanation:
the reciprocal of 
To find reciprocal, flip the top and the bottom.
So
would be
.
Multiply like normal.
Answer:
The minutes wouldn't it be hours?
Step-by-step explanation:
No, 1 and 3/9 can be simplified to 1 and 1/3
To find the mean, add all the numbers then divide by the amount of numbers there are to find the average.
210+160+200=570
570÷3=190
Answer: 190