Question 1109805: one tenth of a number is 2 less than one seventh of it's predecessor. find the number?
Answer by rothauserc(4718)   (Show Source):
You can put this solution on YOUR website! if number means whole numbers, then let x be the number
:
(x/10) = ((x-1)/7) -2
:
x/10 = (x -1 -14)/7
:
x/10 = (x-15)/7
:
cross multiply the fractions
:
7x = 10x -150
:
-3x = -150
:
x = 50
:
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the number is 50
:
check the answer
:
(50/10) = (49/7) - 2
:
5 = 5
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answer checks
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