Let x = price of the bike before a sales tax.
The price after a sales tax of 8% is
x + 0.08x = 1.08x dollars
Because the price paid was $171.18, therefore
1.08x = 171.18
x = 171.18/1.08 = $158.50
Answer: 158.50
18 per adult, 9 per child total equals 2,475,00 and the hold of guest is 150
Simply cross multiply:
18*m = 6*15
18m = 90
m = 5