Marshall earned some money doing odd jobs last summer and put it in a savings account that earns 7% interest compounded quarterly. After 10 years, there is 400.00 in the account. How much did Marshall earn doing odd jobs?

Lời Giải

Lời Giải

Principal : 199.84

Các bước giải pháp

Translate the problem into an equation:

400 = P (1 + \frac{0.07}{4})^{4 \cdot 10}

Giải

P, 400 = P (1 + \frac{0.07}{4})^{4 \cdot 10} : P = 199.84

Principal : 199.84

Ví dụ phổ biến

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