Answer:
C. j +2j + 3(2j) = 175
Step-by-step explanation:
Let j represent the amount of money Jim has.
Carroll has twice that amount, so has 2j.
Mike has 3 times the amount Carroll has, so has 3(2j).
The sum of these quantities is 175, so the equation can be written ...
j + 2j + 3(2j) = 175 . . . . . matches choice C