Well to make it easier for you, you can turn the numbers into decimals soo.... 25 7/8=25.875 32 1/2= 32.5 then after you do... 32.5-25.875=6.625 and if you what a fraction form here it is.. 6 5/8 so when the water was 25 7/8in In 2 days it rained 6 5/8in which got the water to 32 1/5. check: 25 7/8 +6 5/8= 25+6=31 7/8+5/8= 12/8 simplify it to 1 4/8 1 4/8 could also be 1 1/2 so then 31 + 1 1/2 = 32 1/2