Answer: Sp+vat=1656 1656=spx 115/100 sp=1656xloo/115=1440 mp = spx loo/100-Disc = 1440xloo/90=1600.
What is $4.30 makeup; 40% discount; 6% tax ?
second-period class average:
55+70+450+480+170+270+95 = 1590
1590/20 = 79.5
sixth-period class average:
65+225+480+595+270+190 = 1825
1825/20 = 91.25
on average, students in the sixth period class scored higher