a number is increased by 60 % and then decreased by 60 % . find the net increase or decrease per cent .
"let the number be 100 . increase in the number = 60 % = 60 % of 100 = ( 60 / 100 ã — 100 ) = 60 therefore , increased number = 100 + 60 = 160 this number is decreased by 60 % therefore , decrease in number = 60 % of 160 = ( 60 / 100 ã — 160 ) = 9600 / 100 = 96 therefore , new number = 160 - 96 = 64 thus , net decreases = 100 - 64 = 36 hence , net percentage decrease = ( 36 / 100 ã — 100 ) % = ( 3600 / 100 ) % = 36 % answer : e"
divide(multiply(add(60, const_100), subtract(const_100, 60)), const_100)