RRB NTPC Result, Cut Off for Pay Level 5 declared for RRB Chandigarh. For other RRBs, the results will be released soon. Earlier, the RRB had released the tentative schedule for the upcoming DV &Medical Examination for various posts.. The RRB NTPC exam is conducted to fill up a total number of 35281 vacant posts. Candidates who are qualified for the Computer Based Aptitude Test will be eligible for the next round, which will be Document Verification & Medical Exam. The candidates with successful selection under RRB NTPC will get a salary range between Rs. 19,900 to Rs. 35,400. here.
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Answer:
Consider x be subtracted from each term 23 – x, 30 – x, 57 – x and 78 – x are proportional It can be written as 23 – x: 30 – x :: 57 – x: 78 – x (23 – x)/ (30 – x) = (57 – x)/ (78 – x) By cross multiplication (23 – x) (78 – x) = (30 – x) (57 – x) By further calculation \begin{array}{l} 1794-23 x-78 x+x^{2}=1710-30 x-57 x+x^{2} \\ x^{2}-101 x+1794-x^{2}+87 x-1710=0 \end{array} So we get -14x + 84 = 0 14x = 84 x = 84/14 = 6 Therefore, 6 is the number to be subtracted from each of the numbers.
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