Question

Please help ASAP

There are two identical glasses. One glass is 10/12 full. The other is 8/15 full. Water is poured from one glass to the other so that one of them is now full. What fraction of the other glass is filled ?

Answer 1

You add them together and subtract 1 because the total amount stays the same throughout the entire problem and you have to find the amount of water in the glass that is not full when the other glass is full. 10/12 + 8/15 = 50/60 + 32/60 = 82/60. 82/60 - 60/60 = 22/60, which simplifies to 11/30.