Friar Company discloses the following information for the year ended October 31, 2020:

Sales ............................................................................................. $363,000
Sales discounts ................................................................................. 6,300
Sales returns ................................................................................... 14,800
Merchandise inventory (beginning of period) ............................ 31,800
Invoice cost of merchandise purchases .................................... 182,000
Purchase discounts .......................................................................... 4,400
Purchase returns and allowances .................................................. 6,800
Cost of transportation-in ............................................................... 11,800
Gross profit from sales................................................................. 143,600
Profit ................................................................................................ 65,800

Required

Calculate 

(a) Total operating expenses, 

(b) Cost of goods sold, 

(c) Merchandise inventory (end of period), 

(d) Gross profit ratio (round to two decimal places).

Analysis Component: Assuming that the gross profit ratio for the year ended October 31, 2019, was 47%, compare Friar Company’s performance from 2019 to 2020.