Question

sixty eight student are separated into two groups.the first is 3 times as large as the second .how many are in each group

Answer 1

68 = 3x + x
68 = 4x

x = 17
3x = 51

Answer 2

Answer: first 51 second 17
x=second group, 3x=first group
3x+x=68
4x=68
x=17
3x=3*17=51