Verified Answer :

36:20            18:10
--------    =     --------      = 9:5
    2                  2

jodeelhyn

36:20, or 36/20. To simplify, find a number both 36 and 20 can be divided by.
36: 1, 2, 3, 4, 6, 9, 12, 36
20: 1, 2, 4, 5, 10, 20
The largest number both have in common is 4. So, divide both 36 and 20 by 4 so that you have:
9:5

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