Mallory took two trips to the pizzeria to purchase food for her party. On her first trip, she bought 5 pizza pies and 3 bottles of soda, which cost her $50.50 without tax. On her second trip, she bought 2 pizza pies and 6 bottles of soda, which cost her $31.00 without tax. How much did each pizza pie cost?

20days louise can read300 pg

step-by-step explanation:

1 day 15 pg 300: 15= 20

x day 300 pg

10 - 8 = -2

  8 - 6 = -2

etc, so -2 is the common difference

step-by-step explanation:

answer: $53750

steps:

list the principal and interest after the n-th year:

n       principal   simple interest

1     12500     375

2     25000     750

3     37500     1125

4     50000     1500

sum: $50000     $3750

total at end of year 4: $53750