johnsasha johnsasha

12-05-2022
Mathematics

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

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12-05-2022

Answer:

€ 1800

Step-by-step explanation:

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

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