How do you increase 80 kg by 40%? Algebra Linear Equations Percent Equations 1 Answer sjc Dec 13, 2016 112 Explanation: to increase by#" "40%" "# you work out #" "40%" "#of #" "80" "# then add it on to #80# a quick way is to do the calculation #80xx1.4# #=112# 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 1700 views around the world You can reuse this answer Creative Commons License