1. In an army selection process, the ratio of selected to unselected candidates was 4:1. If 90 less had applied and 20 less selected, the ratio of selected to unselected would have been 5:1. How many candidates had applied for the process?
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By: anil on 05 May 2019 02.15 am
Let $$5x$$ candidates applied for the process. Candidates selected = $$4x$$ and candidates not selected = $$x$$ If candidates applied = $$5x - 90$$ Candidates selected = $$4x - 20$$ => Candidates not selected = $$(5x - 90) - (4x - 20) = x - 70$$ According to ques, => $$frac{4x - 20}{x - 70} = frac{5}{1}$$ => $$4x - 20 = 5x - 350$$ => $$x = 350 - 20 = 330$$ $$ herefore$$ Number of candidates who applied for the process = $$5 imes 330 = 1650$$ => Ans - (A)
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