Respuesta :
Out of the last 50 guests, only one of them break coupon for free admission
so ratio is 1 out of 50
for 1500 guests, 1500 x 1/50 = 30 guests
ans is B
so ratio is 1 out of 50
for 1500 guests, 1500 x 1/50 = 30 guests
ans is B