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1 February, 10:18

A farmer is going to plant carrots on 4 3/10 acres, corn on 4 7/30 acres and peppers on 2 7/15 acres. If each acre requires 25 bags of fertilizer, how many bags of fertilizer does the farmer need to plant all the acres?

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  1. 1 February, 10:31
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    To convert mixed fractions to improper fractions:

    a b/c = (ac+b) / c so we have:

    43/10+127/30+37/15 now making all terms have a common denominator of 30

    (43/10) (3/3) + (127/30) (1/1) + (37/15) (2/2)

    129/30+127/30+74/30

    (129+127+74) / 30

    330/30

    11 acres

    Now

    11a (25b/a) = 275 bags of fertilizer.
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