3400 dollars is placed in an account with an annual interest rate of 7-5%. How much
2 answers:
Answer:
$7,735
Step-by-step explanation:
Assuming simple interest, the following formula applies:
A = P (1 + rt)
where,
A = Final Amount (we are asked to find this)
P = Principal Amount (given as $3,400)
r = annual interest rate (given as 7.5% = 0.075)
t = time in years (given as 17 years)
Substitute these into the equation above:
A = P (1 + rt)
A = 3,400 [ 1 + (0.075)(17) ]
A = $7,735
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Answer:
1. 8.85 quarts
2. 44.25%
Step-by-step explanation:
In 15 quarts of a solution with percentage of antifreeze = 35%
Amount of antifreeze = 35% × 15
= 0.35 × 15
= 5.25 quarts
that solution is mixed with 5 quarts of a solution with percentage of antifreeze = 72%
Amount of antifreeze = 72% × 5
= 0.72 × 5
= 3.6 quarts
Total amount of mixture = 15 quarts + 5 quarts = 20 quarts
1. Now we will calculate the total amount of antifreeze in the resulting mixture.
= 5.25 + 3.6 = 8.85 quarts
2. The percentage of the resulting mixture is antifreeze
=
= 44.25%
1. total amount of antifreeze is 8.85 quarts
2. the percentage of antifreeze is 44.25%