Survey IT conducted a survey of employees with 2-3 years of work experience in the IT Industry. Every one of the respondents was proficient in one or more languages Python, C++ and Java. a) In all there were 80 respondents. b) 45 respondents were proficient in Python, 42 in C++ and 38 in Java. c) The average salary of all the respondents was Rs.9.5 lakhs. d) Fewer than 10 people were proficient in all 3 languages. e) Among those proficient in exactly two languages, the number proficient in only C++ and Java was 25% less than the number of proficient in only python and C++, which in turn was 50% more than the number proficient in Python and Java. f) The average salary of the respondents who were proficient in exactly 2 languages was Rs.10 lakhs while that of those who were proficient who in all 3 was Rs. 15.75 lakhs. Questions: 1) How many respondents were proficient in only Python? 2) How many respondents were proficient in Java but not C++ ? 3) What was the average salary in Rupees of the respondents who were proficient in exactly 1 language? 4) If the average salary of the respondents who were proficient in only Python and Java was Rs.9.4 lakhs and that of the respondents who were proficient in only C++ and Java was Rs.9.2 lakhs, what was the average salary in lakhs of Rupees, of the respondents who were proficient in only Python and C++ ?

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