51 is 340% of what? Algebra Linear Equations Percent Equations 1 Answer Veerupaksh Apr 3, 2017 15 Explanation: I hope you know that if some number #a# is some #c%# of a number #b# then #color(red)(a/b*100 = c)# Let #51# be #340%# of some number say #color(red)(x)#. Then, #51/x*100 = 340# #=> 51/340*100 = x# #=> x = 15# Hence #51# is #340%# of #15#. 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 6138 views around the world You can reuse this answer Creative Commons License