Thursday, May 29, 2008

year 10 assignment

Mr Edwards, Mr Jones and Mr Parry each decided to buy a new car which was priced in the showroom at $ 7200.

(a) Mr Edwards offered his old car in part exchange and the salesman allowed him $ 5850 towards the cost of the new car. Calculate how much more Mr Edwards had to pay for his new car. [ans : $ 1350]

(b) Mr Jones paid for his new car in cash and was given a discount. Given that he paid $ 6120 for his new car, calculate the percentage discount he received. [ans : 15%]

(c) Mr Parry agreed to pay 40% of the showroom price of the car as a deposit and the balance in equal monthly instalments over a period of 2 years. Calculate the amount of each monthly instalments. [ans : $ 180]

(d) The salesman had hoped to sell each new car for $ 7200 so that he could make a profit of 20% on the cost price. Calculate the cost price of each new car. [ans : $ 6000]

Hints

(a) Mr Edwards was virtually paying the new car with his old car. The salesman agreed, but said that his old car only worth $ 5850. So, Mr Edwards need to pay the remainder, but by how much? (very easy question).

(b) The discounted price of the new car is $ 6120. So, how much is the discount? Use the “before after” method.

(c) First, find 40% of $7200.

Secondly, deduct your answer from $7200.

Lastly, this remainder is to be divided by the no. of months in 2 years. (of course you know how many months)

(d) We are looking for the original price here.

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