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creativ13 [48]
3 years ago
15

50 is 40% of what number??????

Mathematics
2 answers:
kvv77 [185]3 years ago
8 0
So a hack is we know that 20% times 5 =100% and 40 divided by 2=20 so

50=40%
divide both sides by 2
25=20%

20 times 5=100 so
multiply both sides by 5
125=100%
Daniel [21]3 years ago
8 0
 All you have to do is times 100 by 50 and then divide the product: 5000 by 40 which equals 125.

how I solved it (solved for X) below:

40/100 = 50/x --> 50*100 = 40x --> 5000 = 40x --> 5000/40 = x --> 125 = x
<u></u>
KEY: <u>/ means </u><u>divide</u>  <u>* means times</u>  <u>= means equals</u>  <u>--> means "next step</u><u>"</u>

It is called cross multiplication 
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