Q17 - Any help, please?

Shift workers at Yadey Consulting like to use the ofce phone to make long distance calls. The length ofthe last Bi] long distance calls made from the ofce phone was recorded and displayed in the percent ogi'u'e below. Percent of calls less than upper limits are shown on the graph. 1m- .55? unwell-we Promo; ml 59 II 5 \"I I5 lb 25 Ill Tune Spent on Lou DII'bIHDE- tlll lull-Allies} a. 1What percent of the calls lasted less than 1 5 minutes? I l'i'i b. What percent of the calls lasted between 1D and 2D minutes? I lit c. How man}:r of the calls lasted less than it} minutes? 11. How magi of the calls lasted at least 20 minutes