Tip is calculated on the subtotal of a bill true or false ?

Step-by-step explanation:

The white-gloved etiquette mavens at the Emily Post Institute in Vermont say that restaurant tips should be 15% to 20% of the bill's pretax total. The Etiquette Scholar website agrees that you should “tip on the pretax amount of the bill, not on the total.”

hi,

i'm 75% sure the answer is 1,1 to both lines.

have a great day