a) The sales tax of the person with a subtotal of $24.95 is of: $2.37.
b) The subtotal of a person with a sales tax of $1.61 is of: $16.95.
a The sales tax of the person with a subtotal of $24.95 is obtained with the multiplication of the subtotal by the sales tax of 9.5% = 0.095 as follows, hence:
Sales tax = 0.095 x 24.95
= $2.37.
b The subtotal of a person with a sales tax of $1.61 is obtained considering that $1.61 represents 9.5% = 0.095 of the subtotal x, due to the tax rate, as follows:
0.095x = 1.61
x = 1.61/0.095
x = $16.95
Complete question
The tax rate at this restaurant is 9.5%.
Another person's subtotal is $24.95. How much will their sales tax be?
The subtotal of a person with a sales tax of $1.61 is obtained. What is the amount?