Consider the long division problem below. what error did sam make when he computed the answer?

The mistake Sam made was to don't write down the dot or the comma after 6. The result of the long division is - 6.3, not -63.

Step-by-step explanation:

1. Let's consider by ourselves the long division problem to understand better what was Sam's mistake.

- 0.2709 ÷ 0.043 = - 6.3

270 ÷ 43 = 6 and 12 as remainder

129 ÷ 43 = 3 and no remainder left

The mistake Sam made was to don't write down the dot or the comma after 6. The result of the long division is - 6.3, not -63.

If we multiply -0.2709 * 10⁴ = -2,709 and if we do the same with 0.043 * 10⁴ = 430. Now let's divide -2,709 ÷ 430 = -6.3, the result should be the same, but like Sam made the mistake it isn't.

one fourth of 9% = 2.25%

gavin is correct in saying : the equivalent quarterly interest rate would be

2.25%.