Question

yuri measured the snowfall over a four-day period and calculated a total of 15131513 inches of snowfall. if it snowed 434434 inches on the first day and 212212 inches on the second day, how much snow fell on the third and fourth days?

Answer 1

434 + 212 + x = 1513
646 + x = 1513
x = 1513 - 646
x = 867 <== a total of 867 inches fell on the 3rd and 4th day (combined)....thats not for each day