If 6 men and 5 boys can complete a piece of work in 9 days, while 24 men and 20 boys can complete the same work in 3 days, how long will it take for 12 men and 15 boys to complete the same work?
Let the efficiency of a man be ‘p’ units per day and the efficiency of a boy be ‘q’ units per day. According to the question: (6p + 5q) × 9 = (24p + 20q) × 3 Or, 54p + 45q = 72p + 60q Or, 15q = 18p Or, q = 1.2p Total work = (6p + 5q) × 9 = (6p + 6p) × 9 = 12p × 9 = ‘108p’ units Efficiency of 12 men and 15 boys = 12p + 15q = 12p + 18p = 30p units per day Required time = (108p / 30p) = 3.6 days
Puri became the first city in India where people can __________ high quality drinking water __________ from the tap on 24-hour basis.
Fill up the blank with the word that makes the sentence grammatically and contextually correct.
Either my father or my brothers ___________ c...
A fundamental challenge, of course, is how to __________ the social democratic norms within the institutes, representative of Indian diversity and plur...
It’s easy to be ………… , but difficult to ………………
Throughout the text, Graubard's lapidary prose is lucid and provocative, likely to _________ a glow of pleasure in the reader.
Choose the most suitable option to fill in the blanks in the sentences below.
I was born and ________ in the highlands.
To counter this a cross party committee of MP's suggested _______________ subsidized housing to teachers willing to work in deprived schools. ...
In the evening, we ___________ the rains to visit the market.
The athlete's ________ to recover from his injury was remarkable.
Jane used volunteering as an ___________ to help her come to terms with her husband’s death.
