   # A certain number is divided by five, seven is added and the result is quadrupled to...........What was the first number?

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A certain number is divided by five, seven is added and the result is quadrupled to get a number 15 higher than the original number.
What was the first number? posted Nov 22, 2018

65

(x/5+7)*4=x+15 =>4x/5+28=x+15 => x/5=13 => x=65 answer Nov 22, 2018

We can write the following equation:
((x/5) + 7) times 4 = x + 15 ,
Solving this equation, x = 65 answer Nov 25, 2018 by anonymous

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