42 is 200% of what number? Algebra Linear Equations Percent Equations 1 Answer CoStellar · Stefan V. Apr 18, 2017 #42# is #200%# of #21# Explanation: I can't really explain this, but I will try my best. #200%# can be converted to a ratio of #2:1#. Since you have #42#, that is your #2# in that ratio. Now that you have your #42#, you can divide it by #2# to get your answer, #21#. Answer link Related questions Jimmy made a #"75%# on a test worth #46# points. How many points did he get correct? How do you use proportions to solve percent equations? How do you translate percent problems into an equation? What number is 32% of 600? What number is #3/4#% of 16? 8 is 20% of what number? 99 is 180% of what number? What percent of 7.2 is 45? What percent of 150 is 5? What is 2% of 92? See all questions in Percent Equations Impact of this question 1612 views around the world You can reuse this answer Creative Commons License