Question: When onefourth of a number is added to onethird of the same number, the result is 28. What is the number? I am a student, in grade 10. Hi, The problem with quarters and thirds is that you can't add them directly. On the measuring cup I use for baking there is a scale that tells me onefourth of a cup and another that tells me onethird of a cup but no scale that allows me to measure onethird of a cup plus onefourth of a cup. I know that 3 x 4 = 12 so if there were a scale that measured twelfths of a cup I could do it. Onefourth is threetwelfths and onethird is fourtwelfths so You don't have cups but the idea is the same. There some unknown number you need to find. In order to talk about this number give it a name. Call it x. What you then know is that Now since 4 x 7 = 28, Now you should check, does onefourth of a 48 added to onethird of 48 give 28? Cheers,Penny
