A car is purchased on hire-purchase. The cash price is $21 000 and the terms are a deposit of 10% of the price, then the balance to be paid off over 60 equal monthly installments. Interest is charged at 12% p.a. What is the monthly installment?
Correct answer: B. $504
- A. $503
- B. $504
- C. $505
- D. $506Education
Explanation
The 10% deposit is $21,000 x 10% = $2,100, leaving $18,900. Over 5 years, simple interest is $18,900 x 12% per year x 5 years = $11,340, so the total paid in instalments is $30,240 and each of 60 monthly instalments is $30,240 ÷ 60 = $504. Option a, $503, is usually caused by rounding too early.
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Percentages express a quantity as parts per hundred and support calculations involving increases, decreases, discounts, commissions, taxes, and successive changes. Questions require distinguishing percentage change from percentage points and identifying the original value when a final value and its percentage change are given.
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