6/40 can be cancelled down to 3/20 (divided by 2). Now your looking for 100 because percent means per hundred. Can 20 fit into 100? yes it can, it fits in 5 times. What you do to the bottom, you must do to the top. So we times 3 by 5 which gives us 15 and 20 by 5 = 100. Now our equation looks like this: 15/100. Since we know that 100% is a whole so pretty much 15/100 = 15 %
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6/15 = 2/5 = 4/10 = 40%. So 6/15 = 40%
15/40 = 37.5 percent
40 percent
percent of 12 over 40 = 30%% rate:= 12/40 * 100%= 0.30 * 100%= 30%
42.4 is 6% greater than 40.