9514 1404 393
Answer:
120
Step-by-step explanation:
If n is the number of 6th-grade students, we are told the club membership is ...
20% × n = 24 . . . . . . students in the engineering club
n = 24/0.20 = 120 . . . . . divide by the coefficient of n
There are 120 sixth-grade students in all.