taniairisrobles taniairisrobles
  • 24-11-2017
  • Mathematics
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A wise man gave his students this riddle; “how old am I if 400 reduced by three times my age is 175

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SmartyIsMe
SmartyIsMe SmartyIsMe
  • 24-11-2017
400-3x=175
-3x=-225
x=75 years old
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