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I = PRT
1800 = P * 0.05 * 9
1800 = 0.45P
1800/0.45 = P
4,000 = P
1800 = P * 0.05 * 9
1800 = 0.45P
1800/0.45 = P
4,000 = P
Cross multiply and solve for x.
1300 / 200 = 6.5 hours
6.5 + 0.5 = ?
I = P * r * t
Where:
I = Interest earned
P = Principal amount (initial deposit)
r = Interest rate (as a decimal)
t = Time (number of years)
We are given that the interest earned (I) is $1,800, the interest rate (r) is 5% (or 0.05 as a decimal), and the time (t) is 9 years. We need to find the principal amount (P).
Substituting the given values into the formula, we get:
1,800 = P * 0.05 * 9
Now, let's solve for P:
P = 1,800 / (0.05 * 9)
P = 1,800 / 0.45
P = $4,000
Therefore, Samantha deposited $4,000 in the savings account.