70% of what number is 126 and why or how
let the number be a ...i.e ,70% of a =126 ..=> 70/100 X a =126=>7/10 a =126 =>7 a = 126 X 10=>7 a= 1260=>a = 1260/7 a = 180 ..Hope it helps !!!
\(70*x=126 \\ \\ \frac{70}{100} *x=126 \\ \\ \frac{7}{10}*x=126 \\ \\ x=126: \frac{7}{10} \\ \\ x=126* \frac{10}{7} \\ \\ x= \frac{1260}{7} \\\\ \boxed{x=180} \\\\\huge\text{The answer is x=180}\)