In a family, the father took 1/5 of the cake and he had 4 times as much as others had, then the family members are________. A. 16 B. 17 C. 18 D. None of these
There is one cake It is divided among x family members, so each gets: 1/x The father took 1/5 which is 4 times greater than each one's piece. So: 1/5 = 4(1/x) 1/5 = 4/x x = 20 There are 20 family members so the answer is none of these