1.

The fifth part of a number when increase by five equals to it's fourth part decrease by five. find the number​

Answer»

EXPLANATION:

LET NUMBER be X

\frac{1}{5} x \:  + 5 =  \frac{1}{4} x - 5 \\  \\  \frac{x}{4}  -  \frac{x}{5}  = 10 \\  \\  \frac{5x - 4x}{20}  = 10 \\  \\ x = 200 \\  \\ so \: the \: number \: is \: 200



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