Question

Mega mart collects a sales tax equal to 1/16 of the retail price. Is the amount of tax collected proportional to the cost of an item before tax is added

Answer 1

Mega mart collects a sales tax equal to 1/16 of the retail price.

Lets take some example

Suppose retail price = $16 then tax =
`(1)/(16) * 16 = 1`

retail price = $32 then tax =
`(1)/(16) * 32 = 2`

retail price = $48 then tax =
`(1)/(16) * 48 = 3`

retail price = $64 then tax =
`(1)/(16) * 64 = 4`

From this we conclude that ,
`tax = (1)/(16) * cost \ of \ an \ item`

So, the amount of tax collected proportional to the cost of an item before tax is added