Question

The price of a tv was decreased by 20% to £1440. What was the price before the decrease?

Answer 1

let the price before discount be x

x - 20% of x = 1440

x - 20x/100 = 1440

x - x/5 = 1440

(5x - x)/5 = 1440

4x/5 = 1440

therefore x = 1440 × 5/4 [ transpose 4/5 to right hand side ]

x = 360 × 5

= € 1800

Answer 2

Answer:

The price of tv before the decrease £ 1800.

Step-by-step explanation:

The sale price and the discount percentage must be known in order to determine the item's original cost. A straightforward formula is used in the calculations to divide the sale price by the percentage-based result of 1 minus the discount.

Use this equation to determine an item's original or list price.

Original Price$=\frac{Price}{1-discount}$

Convert percentages to decimal form by moving the decimal point two places to the left. Always round your answer to two digits following the period when you are finding values with money.

Given: Percentage decrease in tv = 20%

Price of tv after decrement =  £ 1440

The lower price is 80% of the original, so the original price is

£ $1440 = 0.80\times original$  

 $original=\frac{1440}{0.80}$

Original = £1800

The price before the decrease was  £1800.

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