Answer:
59 miles per hour
Step-by-step explanation:
Answer:
The answer is either 18pi or 56.55
Step-by-step explanation:
Answer:
I think A
Step-by-step explanation:
Please excuse my dear aunt sally ( parentheses, exponents, multiplication, division, addition, and subtraction )
Answer: 
Step-by-step explanation:
Given
It takes 20 min and 30 min for a person and his friend to paint a wall individually i.e.
In 1 min they cover
part and
part of wall respectively.
If the work together, 1 minute work is

Time required will be reciprocal of it
