185/100 + 50% + 4% this is for a mastery challenge and for this lesson alone, i've been getting the answers wrong. if you can me and explain it to me!

185/100 + 50/100 +4/100
= (185+50+4)/100
=239/100
=2.39

Convert everything to a decimal. 
To do that with a fraction divide the numerator by the denominator. 
185 divided by 100 = 1.85 

To convert a percent to a demical move the number to the right twice. Or divide the number by 100. 50 divided by 100 = 0.5 
4 divided by 100 = 0.04 
Now add  :)
1.85 + 0.5 + 0.04 = 2.39 

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