Time for job = 3/4 hr/job = 45 minutes to do the whole job.
Answer:
The number of adults is 
Step-by-step explanation:
Let
x------> the number of children
y------> the number of adults
we know that
-------> equation A
-------> equation B
Multiply equation A by 
-------->
------> equation C
Adds equation B and equation C

4 x 10^-7 (7 x 10^-9) (1 x 10^4) (2 x 10^4)
Answer:
-7
Step-by-step explanation:

Answer:
6.6%
Step-by-step explanation:
30% of 22 is 6.6%
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