Question

John saw that the price of a car he wanted to buy was going to increase by 4% the following week. John knew the car currently cost £12,000. John used the calculation 12,000 × 1.4 to calculate the new cost. Explain what is wrong with John’s method:

Answer 1

Answer:

John incorrectly converted 40% instead of 4%.

Step-by-step explanation:

Given information is;

Price of car John wants to buy = £12,000

Expected increase = 4% = $\frac{4}{100}$

Expected increase = 0.04

Let,

1 be the original amount.

Total amount after increase.

Total = (1+0.04) * Price of car

Total = 1.04 * £12,000

John incorrectly converted 40% instead of 4%.