SOLUTION: There are 92 students in the 3rd and 4th grades. Write an equation to find how many 3rd graders there are. Use a question mark to represent the unknown number and solve.

Algebra ->  Average -> SOLUTION: There are 92 students in the 3rd and 4th grades. Write an equation to find how many 3rd graders there are. Use a question mark to represent the unknown number and solve.      Log On


   



Question 1046863: There are 92 students in the 3rd and 4th grades. Write an equation to find how many 3rd graders there are. Use a question mark to represent the unknown number and solve.
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
Let ? be the number of 3rd graders.
Let x be the number of 4th graders.
Since the number of both together is 92, we can write
? + x = 92
Now subtract x and get
? = 92 - x