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1). 432). 593). 674). Cannot be determined |
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Answer» Given, Average salary for chemical trade(in lacs per ANNUM) = Rs. 2.45 Average salary for electronics trade(in lacs per annum) = Rs. 3.56 Average salary for chemical trade and electronics trade(in lacs per annum) = Rs. 3.12 Let the number of students in Chemical be a and number of students in Electronics be b. $(\therefore\;\FRAC{{2.45\;\TIMES\;a\;+\;3.56\;\times\;b}}{{a\;+\;b}}\;=\;3.12)$ ⇒ 2.45a + 3.56b = 3.12a + 3.12b ⇒ 0.44b = 0.67a ⇒ b/a = 67/44 ⇒ b = 67a/44 For b to be an INTEGER the least value will be 67 |
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