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Work done by A in 1 minute = 1/24 Work done by B in 1 minute = 1/30 Work done by C in 1 minute = -1/40 Net work done in 1 minute = 1/24 + 1/30 - 1/40 = 6/120 = 1/20 Time to fill the tank = 1 / (1/20) = 20 minutes Correct answer: a) 20 min
They have to _____________ with elephants, hippos, bushpigs, porcupines, vervet monkeys, baboons and birds which are after their crops.
...(A) The success of the project depended on the team's _____________ to meet the tight deadlines.
(B) The contract's _____________ in ensuring com...
The circle of life _________ on, both good and _______ days come and go. There may ______ a time when all is not well in your life. A bad___________, ac...
Jane used volunteering as an ___________ to help her come to terms with her husband’s death.
In each of the questions below, a sentence is given with two blanks, indicating that some parts are missing. Identify the correct pair of words that fit...
In these questions a sentence is given with a blank and you have to choose an appropriate word from the given options that can fill the sentence making...
Choose the most appropriate option to fill in the blank in sentence given below.
We were _____________ when we heard that the Alma's were emigrat...
Which conjunction can be used for this sentence?
You can stay out with friends as much as you want ___________ your mother agrees to it.
Sitaram Swain, winner of the Emerging Artist of the year Award 2017, tells us how common objects …….him to deal ….. bigger issues.
The special campaign featuring the ferocious, talking dinosaur has been ___________ by the United Nations Development Programme to urge more climate ac...