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Baseball4744
30.03.2021 •
Mathematics
Parallel lines and tranvsveral
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Ответ:
105
Step-by-step explanation:
they are supplementary
Ответ:
The correct option is B. decreased by 4.5 percent.
Step-by-step explanation:
Consider the provided information.
The typical family on the Planet Econ consumes 10 pizzas, 7 pairs of jeans, and 20 gallons of milk. In 2016,
In 2016, pizzas cost $10 each, jeans cost $40 per pair, and milk cost $3 per gallon.
Cost of living in 2016 = 10×$10+7×$40+20×$3
= $100+$280+$60
= $440
In 2017, the price of pizzas went down to $8 each, while the prices of jeans and milk remained the same.
Cost of living in 2017 = 10×$8+7×$40+20×$3
= $80+$280+$60
= $420
Change in cost of living is:
Here minus sign represents decreased.
Hence the cost of living is decreased by 4.5 percent.
Therefore, the correct option is B. decreased by 4.5 percent.