Hi there, to make mixed numbers as a percent, first, we divide the numerator by the denominator and add the whole number in to the decimal. In this case, we have 3 87/125. Like I said, in order to turn 3 87/125 into a percent we divide the numerator by the denominator, where 87 is the numerator and 125 is the denominator. 87/125=0.696, and the other thing I said is once we get the decimal we add the whole number to the decimal, where 3 is the whole number 0.696+3=3.696. Now, in order to make a decimal in to a percent we multiply the decimal by 100, then add the percent (%) symbol. In this case, we have the decimal 3.696, we are going to multiply 3.696 by 100, 3.696*100=369.6. Now, as I said before we add the percent. 369.6%, Therefore, the answer is 369.6%