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30 June, 23:13

A car that runs on corn ethanol will emit

MMt of CO2 each year.

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Answers (1)
  1. 30 June, 23:51
    0
    2.256

    Explanation:

    This is a percent change problem. The CO2 emitted by a car using gas is 4.7 MMt per year. The CO2 emitted by a car using corn ethanol made from biomass is 52% less than 4.7 MMt.

    Find 52% of 4.7 MMt:

    0.52 * 4.7 = 2.444.

    Subtract 2.444 MMt from 4.7 MMt:

    4.7 - 2.444 = 2.256.

    The solution is 2.256 MMt.
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