Answer :
15 + 0.75x = 57
-15 -15
0.75x = 42
0.75x/0.75 = 42/0.75
x = 56 people
The student interviewed 56 people on the day he earned $57
-15 -15
0.75x = 42
0.75x/0.75 = 42/0.75
x = 56 people
The student interviewed 56 people on the day he earned $57
if the student earned $57 in that given day to find number of people interviewed we first subtract the daily rate of $15 from $57 then we divide the answer by 75c to get number of people interviewed which is 56