Question

Find the number which when increased by 30% becomes 39

Answer 1

Answer is 130
As 30% of x=39
30x/100=39
x=39*100/30
x=130

Answer 2

$\circ\circ\circ\circ\underline{\fbox{\fbox{\fbox{\fbox{\fbox{\Large{\underline{\textbf{SOLUTION}}}}}}}}}\circ\circ\circ\circ$

$Let\:the\:number\:is\:'x'\\\\\\According\:to\:the\:question,\\\\\\x+30\%\:of\:x=39\\\\\\\implies x+\frac{30}{100}\times x=39\\\\\\\implies x+\frac{3}{10}x=39\\\\\\\implies13x=39\times10\\\\\\\implies x=\frac{39\times10}{13}\\\\\\\implies \boxed{\boxed{x=30\:answer}}$