Compute Cash Conversion Cycle for Competing Firms Halliburton and Schlumberger compete in the oil field services sector. Refer to the following 2018 financial data for the two companies to answer the requirements.

$ millions	HAL	SLB
Total revenue	$24,955	$34,128
Cost of sales and services	21,849	29,617
Average accounts receivable	5,135	7,983
Average inventory	2,712	4,028
Average accounts payable	2,786	10,130

A. compute the following measures for both companies

- Days sales outstanding

- days inventory outstanding

- days payables outstanding

- cash conversion cycle