B. Sandy planned to invest in a project in which he could add to his investment when ever he wished to. If Sandy's plan for investment in new year is as follow: Jan. 1 to Jan. 31: 563,000 - On Feb 1 he adds 5,000 to his investment 5,000 - On Jun. 1 he adds another $12,000 and On Nov. The adds another $3,000 What is Sandy's average cumulative investment during the year