I need help to find out what the number is.

Mathematics
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If you take a number and add a zero to the right and subtract the result from 143, you’ll get three times the original number. What is the number?
Jun 7th, 2015

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Jun 7th, 2015

Let the number be x

if you add 0 to the right, its value will be  10 * x = 10x

143 - 10x = 3x

143 = 13x

143/13 = x

x = 11

So the number is 11.

Jun 7th, 2015

Let the number be x

if you add 0 to the right, its value will be  10 * x = 10x

143 - 10x = 3x

143 = 13x

143/13 = x

x = 11

So the number is 11.

Jun 7th, 2015

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Jun 7th, 2015

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