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dvissy dvissy
  • 21-02-2016
  • Mathematics
Answered

the sum of two numbers is 30. the first number is 1/5 of the second number. what are the numbers?

Verified Answer :

apologiabiology
apologiabiology apologiabiology
  • 21-02-2016

same question
x+y=30
x is 1/5 of y
x=y/5
subsitute
y/5+y=30
multily both sidse by 5
y+5y=150
add
6y=150
divide both sides by 6
y=25
subsitute
x=y/5
x=25/5
x=5
the numbers are 5 and 25

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