81/2 divided by 40/4

81/2 ÷ 40/4
=
81 20
Mixed Number: 4 1/20
Decimal: 4.05
Percentage: 405%

Step-by-Step Solution

  1. 1
    Take reciprocal of second fraction
    40/4 becomes 4/40
  2. 2
    Multiply by reciprocal
    81/2 × 4/40
  3. 3
    Multiply numerators & denominators
    81 × 4 = 324    2 × 40 = 80
  4. 4
    Simplify
    324/80 = 81/20

How to Divide Fractions

To divide fractions, use "Keep, Change, Flip": keep the first fraction unchanged, change the ÷ to ×, then flip the second fraction. Multiply and simplify.

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