20% 0f 42
2007-10-29 07:21:45 · 20 answers · asked by shaz l 1 in Science & Mathematics ➔ Mathematics
100% ============> 42
20%============> @
@ = 20 x 42 : 100 = 8.4
2007-10-29 07:26:38 · answer #1 · answered by Splishy 7 · 0⤊ 0⤋
Multiply the 20 x 42 and then divide by 100.
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2007-10-29 14:24:05 · answer #2 · answered by Barkley Hound 7 · 0⤊ 0⤋
Normally I work out all percents like this:
20/100(20%) * 42= 8 2/5 or 8.4
2007-10-30 07:15:41 · answer #3 · answered by Kimberley 3 · 0⤊ 0⤋
I think the best way to work that out is divide 42 by 10- so you get 10% of 42 then double that result to get 20% of 42 so:
42/ 10 (10%)= 4.2
4.2 * 2 (20%)= 8.4
So 8.4 is the answer. Hope that helped.
2007-10-29 14:26:16 · answer #4 · answered by ►Aurora Borealis 5 · 0⤊ 0⤋
% means "per hundred".
20% is the same as 20/100 or 0.20
So multiply by the percent and divide by 100. Or shift the decimal place two spots to the left and then multiply. The answer should be the same.
20 * 42 = 840
840 / 100 = 8.4
Or,
0.20 * 42 = 8.4
2007-10-29 14:26:02 · answer #5 · answered by Puzzling 7 · 1⤊ 0⤋
Easiest way is to divide it by a 100 and then multily the answer by whatever percent you want to know
so 42 divide 100 = 0.42 multiplied by 20 = 8.4
Being a 20% is eqaul to 1/5 you could just divide 42 by 5 eqauls the same!
2007-10-29 14:25:37 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Hundredths... 1% of 42 is 42 divided by 100 then multilied by 20 to get the percentage required I make it 8.4
2007-10-29 14:28:07 · answer #7 · answered by Anonymous · 0⤊ 0⤋
divide 42 by 100 and multiply your answer by 20. You get 8.4
2007-10-29 17:27:45 · answer #8 · answered by Karatekid 2 · 0⤊ 0⤋
Multiply 42 by 0.20
so 42x0.20 = 8.40
so 20 percent of 42 is 8.40 hope that helps
2007-10-29 18:15:43 · answer #9 · answered by doodygirl2007 2 · 0⤊ 0⤋
Multiply the percentage by the number and divide it by 100.
Ex. 20 X 42 = 840
840 divided by 100 = 8.4
Or cheat and use a calculator! :)
2007-10-29 14:25:57 · answer #10 · answered by lauraj157 2 · 0⤊ 1⤋