Answer:

Step-by-step explanation:
Let
x----> that month's sales
y----> October earnings
we know that

-----> equation A
-----> equation B
Equate equation A and equation B and solve for x




Answer:
1 and 19/36 inches
Step-by-step explanation:
All you have to do is subtract the woman's height by her son's height.
59 and 1/12 - 57 and 5/9 is 1 19/36
No of people not from their neighborhood=25-20=5
total contact s=25
therefore probability to call a person not from his neighborhood=5/25=1/5
therefore P=1/5
0.8 is 20% of 4. This is because 20% of something occurs when something is divided by 5, since it is 1/5 of 100. You multiply 0.8*5, and you get 4.