FIND:
50% OF 164
75% OF 12
12 1/2 OF 64 
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Hi!
Here is the solution:

SOLUTION 1) 50% of 164

50% = 50/100
        = 1/2
So, 50% of 164
=> 1/2 of 164
= 1 x 164
        2
= 82 -- {ANS.}

SOLUTION 2) 75% of 12
75% = 75/100
        = 3/4
So, 50% of 12
=> 3/4 of 12
= 3 x 12
        4
= 3 x 3
= 9 -- {ANS.}

SOLUTION 3}  (12 + (1/2)) of 64
    = 12.5 of 64
12.5% =12.5/100
           = 125/1000 = 1/8

So, 12.5% of 64
=> 1/8 of 64
= 1 x 64
        8
= 8 -- {ANS.}

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