one pump, let's call it A, fills the reservoir by 1/60 every hour. Now, B fills it by 1/80 every hour. C empties it by 1/90 every hour. All three are on, so now we combine them into one function: t(1/60 + 1/80 - 1/90) = 1, where t = the time it takes to fill it, and 1 is just our "reservoir finally filled" marker.
isolate t onto one side and we see t = 720/13 exactly, or approximately 55.38 hours. let me know if this is the wrong answer but I'm pretty sure it is correct!
Answer:
the amount is 16,000,000
Step-by-step explanation:
first let that amount be Y for an example. so...
so the amount you are looking for is 16,000,000
Their combined chance of winning is 20%.
Answer:
2.09 is less than 2.1
Step-by-step explanation:
2.1 is the same as 2.10
so 2.10 is greater than 2.09.
