Express the number of workers with wages less than Rs 110 as the percent of the number of workers with wages more than Rs 100.
Given below is frequency distrigution of wages (in Rs ) of 30 workers in certain factory:
Wages (in Rs)110−130130−150150−170170−190190−210210−230230−250No.of workers3456543
A worker is selected at random. Find the probability that his wages are:
(i) less than Rs.150 (ii) at least Rs.210 (iii) more than or equal to 150 but less than Rs.210.