odystjinxed29 odystjinxed29
  • 10-06-2015
  • Mathematics
contestada

if 30% of a number is 15 what is the number

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ImSlightlyConfused
ImSlightlyConfused ImSlightlyConfused
  • 10-06-2015
30/100 = 15/x
30x=1500
30x/30=1500/30
x=50
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assassin4234
assassin4234 assassin4234
  • 10-06-2015
Another way of saying 30% is 30/100. Since 15 is 30/100 of another number, we can multiply 15 by the reciprocal of 30/100. This gives us:
15 * 100/30
Therefore, The original is 1500/30, or just 50

Answer: 50

Hope this helped!! :D

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