The formula for the future value of the account is
A = P(1 + r/n)^(nt)
where you have
A = 19909.20
P = 8975
r = 0.038
t = 21
The resulting equation is not one that can be solved by algebraic means, but we can use a graphing calculator to find n. This graph shows us n = 12, so
the interest compounds monthly.
We have to set up 2 equations:
A) x + y = 10 liters
B) .05x + .25y = 10 * .10
Multiply equation B) by -4
B) -.2x - y = -4 then add to equation A)
A) x + y = 10 liters
.8x = 6 liters
x = 7.5 liters of 5%
y = 2.5 liters of 25%
There are 2 pints in a quart. Convert them both to the same measurement. Let's say you convert them both to pints. Multiply. Do 13 times 2. This equals 26. Now it is even, they are both in pints. 25 pints to 26 pints (or 13 quarts). 25 pints is less than 13 quarts. (25 pints < 13 quarts)
Answer:
x=11
Step-by-step explanation:
Please see attached image.