If each one of the fifteen people bought 3 friends.
Then for each person that is bring friends there would be 4 people people(3 freinds + themselves).
Therefore 15*4 = 60
three and fifteen hundreths
Three hundred fifteen
three one five, three fifteen, three hundred and fifteen,
no it be: zero and three hundred fifteen thousandths or 0.0315
Fifteen and three hundred thousandths
215,315.
three
904
Fifteen !
15.73 on word form is 'Fifteen point seven three'. NB You correspondent writing 'fifteen and seventy three hundredths. is correct. However, it could still be read as as fraction '73/100'. However it is incorrect to say or write , 'Fifteen point seventy three'. Becasue the '7' in in the teneths column and the '3' in the hundredths column; it is NOT a numerical unit.
nine and three hundred fifteen thousandths is 9315/1000 or 9.315 in decimal format.
Three hundred and fifteen thousandths (0.315) in standard form = 3.15 × 10-1