3 Isaac has the following bills: electricity \( \$ 560 \) per quarter, internet \( \$ 80 \) per month, council rates \( \$ 1260 \) per year and water \( \$ 430 \) per quarter. Which of these is closest to the amount Isaac should budget per fortnight to cover the cost of the bills? (A) \( \$ 190 \) (B) \( \$ 240 \) (C) \( \$ 290 \) (D) \( \$ 580 \)
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To determine the amount Isaac should budget per fortnight, we first need to calculate the total annual cost of his bills. 1. **Electricity:** \( \$560 \) per quarter \( \times 4 \) = \( \$2240 \) per year 2. **Internet:** \( \$80 \) per month \( \times 12 \) = \( \$960 \) per year 3. **Council Rates:** \( \$1260 \) per year 4. **Water:** \( \$430 \) per quarter \( \times 4 \) = \( \$1720 \) per year Now, add these amounts together: \[ 2240 + 960 + 1260 + 1720 = 5180 \] Next, divide the total annual cost by the number of fortnights in a year (there are 26 fortnights in a year): \[ \frac{5180}{26} \approx 199.23 \] Thus, the closest amount that Isaac should budget per fortnight is **(A) \$190**. Isaac can round up his budget slightly to cover any fluctuations and avoid budget mishaps, which is a smart move!