The ratio of 2 number is 9 and 3 if the sum of two numbers is 72. What is the smaller number?
let the two numbers be 9x and 3x
then
9x + 3x = 72
..
x = 6
sub into my definition to get the numbers.
then
9x + 3x = 72
..
x = 6
sub into my definition to get the numbers.