Hi,<span>
Let x be 100 dollars(since per cent means out of 100)(also SP)
</span>SP without sales tax= 100 - d%/100 * SP
= 100-20/100 * 100
=80/100 * 100
= 0.8 * 100
= 80 dollars=SP without tax
tot. SP(SP with tax)= 100 + tax%/100 * SP
=100 + 10 /100 * 80
= 110/100 * 80
= 11/10 * 80
=1.1* 80
=88%
Breyanna will have to pay 88% <span>of the dress original price.
Hope this helps you.</span>
99 because if you add 78+99+95+86 you get 356 and 356+99 is equal to 455 and 455 divided by 5 is 91.
Step-by-step explanation:
when you are cooking you need to measure fractions of ingredients