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3 years ago

What is the final amount if 457 is decreased by 1% followed by a further 3% decrease? Give your answer rounded to 2 DP.

Mathematics

1 answer:

kaheart [24]3 years ago

4 0

Answer:

438.86

Step-by-step explanation:

1. 457 x 0.99 = 452.43 - Decreased by 1%

2. We need to decrease 452.43 again but this time by 3% - 452.43 x 0.97

3. This gives us an answer of 438.8571

4. Finally we need to round this to 2DP, the 7 (438.8571) rounds up so the number to the left increases. This leaves an answer of 438.86

Hope this helps :D

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Hitman42 [59]

Answer:

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Step-by-step explanation:

As given

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Now by using the trignometric identity .

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vampirchik [111]

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Step-by-step explanation:

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