A tap can fill a tank in 6hours.After half hour the tank filled ,three more similar taps are opened.What is the total time taken to fill the tank completely?

A tap can fill a tank in 6hours.After half hour the tank filled ,three more similar taps are opened.What is the total time taken to fill the tank completely? Correct Answer 4hrs

A tap in 6 hours can fill 1 portion A tap in 1 hours can fill 1/6 portion By 1st 1/2 portion is filled by 3 hours The left 1/2 portion is filled by 3 same tap Now, By 1 tap 1/6 portion is filled in 1 hours By. 3 tap 3/6 portion is filled in 1 hours or 1/2 portion is filled in 1 hours So, total required time is = (3 + 1) hours = 4 hours

Related Questions

The following questions have three statements. Study the question and the statements and decide which of the statement(s) is/are necessary to answer the question. In how many hours tap B can fill the completely empty tank? Statement I: The inlet tap A and the outlet tap C working simultaneously takes 40 hours to fill the tank. Statement II: Efficiency of inlet tap B is equal to efficiency of outlet tap C or 62.5% of the efficiency of inlet tap A. Statement III: The outlet tap C can empty a half filled tank in 12 hours.