Question

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?

Answer 1

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.