Question
The gas that usually causes explosions in coal mines
isSolution
The correct answer is D
A alone can complete 40% of a work in 18 days while B takes 15 days more than A to complete it. If B and C together can complete the work in 20 days, th...
(x + 8) men working 9 hours a day can complete 60% of a work in 12 days. (x + 2) men working 3 hours a day can complete the remaining work in 32 days. F...
The time taken by ‘A’ to build a wall alone is 50% more than the time taken by him to build it along with ‘B’. ‘B’ will take how much percen...
28 men can complete a work in 20 days. 40 women can complete the same work in 28 days. 20 men and 12 women started working and after 16 days, 20 more wo...
4 girls can do work in 8 days, 3 boys can do the same work in 9 days, 7 men in 2 days, and 5 women in 4 days. Who is the least efficient?
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It takes a team of either 20 boys or 35 girls, 27 days to achieve a sales target. How many days will it take for a team consisting of 21 boys and 42 gir...
‘A’ and ‘B’ can do a piece of work in 12 days and 24 days, respectively. They started working together but ‘A’ left after 4 days. Find the t...
‘M’ is 60% more efficient than ‘N’. ‘N’ started the work alone and worked for 24 days and after that ‘N’ is replaced by ‘M’. If the ...
X and Y alone can complete a work in 10 and 40 days, respectively. 50% of the work is completed by Z in 20t days, and the remaining work is completed by...
