the drain open is a ratio of about 1.4. 45/300 with the drain closed and 33/300 to fill with the drain open is also a ratio of about 1.4. That quick mental calculation assures us that the answer is reasonable. You can put this solution on YOUR website! 1. One half of a number is 3 more than one sixth of the same number. What is the number? : Let x = the number: : Just write what is says; (the word "is" usually means equal) "One half of a number is 3 more than one sixth of the same number." .5x = 3 + x Usually written like this: .5x = x + 3 Multiply equation by 6 to get rid of the denominator 6(.5x) = 6* x + 6(3) 3x = x + 18 3x - x = 18 2x = 18 x = 18/2 x = 9 : Check solution in the original equation: .5(9) = 3 + *9 4.5 = 3 + 1.5, confirms out solution : : 2. The denominator of a certain fraction is three times the numerator. If one is added to the numerator and subtracted from the denominator, the result equals 1/2. Find the original fraction. : Let x = the numerator: It says,"The denominator of a certain fraction is three times the numerator." Therefore: 3x = the denominator : It says,"If one is added to the numerator and subtracted from the denominator, the result equals 1/2." = : Cross multiply and