PLESE HELP ME WITH THESE TWO PLEASE!! I NEED HELP

8.
Petunia's Rolls Royce uses 15 L of gas per 100 km. How many litres of gas would she
use to go on a 820 km trip?


10. At a bankruptcy sale, stereo sets were advertised at 60% off. Sales tax is 7%. How
much would be paid in all for a stereo regularly selling for $68.95?