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7 April, 13:28

Shaun collected $925 on the first day of a charity fundraiser. On the second day, he collected $728. By the third day, he had collected a total of $2,538. a) What was the percent decrease in the amount of money collected from the first day to the second day? Round your answer to 1 decimal place. b) Find the percent increase or decrease in the amount cleected from the second day to the third day. Round your answer to 1 decimal place.

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  1. 7 April, 15:38
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    A. There was a percent decrease of 21.3% from the first to the second day.

    B. There was an increase of 21.6% from the second to the third day.

    Step-by-step explanation:

    Step 1; Shaun collected $925 the first day and $728 in the second day. So there has been a decrease in money collected. Percent decrease is given by dividing the difference in values by the actual value multiplied by 100.

    % decrease = (difference in values / initial value) * 100

    % decrease = (925 - 728) / 925 * 100 = 197/925 * 100 = 21.297%.

    This is rounded off to 21.3%.

    Step 2; We need to calculate the money collected on the third day.

    Money collected on the third day = Total money collected in three days - money collected on the first and second day. = $2,538 - ($925 + $728) = $2,538 - ($1,653) = $885.

    Step 3; So Shaun collected $728 on the second day and $885 on the third day. So there has been an increase in money collected. Percent increase is given by dividing the difference in values by the actual value multiplied by 100.

    % increase = (difference in values / initial value) * 100

    % increase = (885 - 728) / 728 * 100 = 157/728 * 100 = 21.565%.

    This is rounded off to 21.6%.
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