engineering recuitment FCI JE 2022 Mock Test for CE/ME/EE (Phase I & II) Quantitative Aptitude Time and Work Work Efficiency
X is 20% less efficient than Y. X, when working alone, takes 30 days to finish the job. He works alone for ānā days. After that, Y joins him and the two work together to finish the job in exactly 20 days (counting from the day X began working alone). What is the value of ānā?
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