3 1/4 + 0.15 x 4/5 : 5%

3 1/4 + 0,15 × 4/5 : 5%
=13/4 + 15/100 × 4/5 : 5/100
=13/4 + 3/20 × 4/5 : 1/20
=13/4 + 12/100 ×20/1
=13/4 + 240/100
=13/4 + 12/5
=65/20 + 48/20
=109/20
=5 9/20

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