Bennie took out a 30-year loan for $165,000 at 5.2% interest, compounded monthly. If his monthly payment on the loan will remain
2 answers:
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Answer:
Step-by-step explanation:
Amount of brine = 100 gal
amount of salt = 80 lb
rate of water running = 4 gal / min
Let A be the amount of salt in lb in the tank at any time t.
(a) dA/dt = rate of salt in - rate of salt out
Rate of salt in = 0
rate of salt out = A x 4 / 100 = A / 25 lb/min
So, dA/dt = 0 - A/25 = - A/25 lb/min
When t = 0, A = 80 lb
So,
(b) Now, A = 40 lb
So,
take log on both the sides
t = 17.3 minutes
0.95
Consider this question in terms of percentages ( that is, out of 100)
she got 95 questions right → 95% = = 0.95
