The tallest man in history was Robert Wadlow and the shortest man was Joseph Boruwlaski. Robert was 68 inches taller than Joseph. The sum of their heights was 146 inches. How tall was each man?
1
Josephs height is
0/1
C
2
Roberts height is
0/1

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?