3 years ago

The price of a necklace was increased by 20% to ?156. What was the price before the increase?

Mathematics

1 answer:

Verdich [7]3 years ago

3 0

Answer:

31.2

Step-by-step explanation:

156 * .2 = 31.2

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Answer:

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Step-by-step explanation:

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substitute '4 + 3b' for 'r' in the 1st equation

4 + 3b + b = 32

4 + 4b = 32

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