What is the percents of 13/50 , 3/5 3/20 5/8 45/90 7/5 19/25

To convert a fraction to a percent, simply divide the numerator by the denominator and multiply the quotient (the result) by 100. 

1.
Divide 13 by 50 to receive the quotient
13÷50=0.26
Multiply the quotient by 100 or simply move the decimal two places to the right. 
0.26×100=26
Add the "percent" symbol to your answer. (%)
As a result, the percent form of is 26%

Similarly, all the fractions will follow the same procedure, in order for them to be converted to a percent. Simply add the percent symbol (%) after the result. 

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Percent means "out of 100" or "parts per 100". For cases where the numerator is larger than the denominator (improper fraction), such as 7/5, the result will be larger than 100% as well, as the total number of parts exceeds the parts available. 

Ithink it is b and d