Question 127300
Let x=unknown number


Remember, "of" means multiplication and "is" means equals (=)



Now convert 90% to a decimal number by dividing by 100: {{{90/100=0.90}}}


So "90% of 50 is what number" becomes 


0.90*50=x



45=x  Multiply 0.90 and 50 to get 45


x=45



So 90% of 50 is 45