Twenty laborers can complete a piece of work in 12 days. If 20 laborers started working and after 3 more days, additional laborers joined to complete the remaining work in 6 days, determine the number of laborers who joined after 3 days of the work started.
ATQ, Let the number of Laborers joined after 3 days of the work started be ‘a’. 20L × 12 = 20L × 3 + (20 + a) L × 6 240L = 60L + 120L + 6aL 60L = 6aL a = 10
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