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A planet's orbit is an ellipse-a stretched-out circle. Two special points, each called a focus, are inside the ellipse.
If 18 men working 20 hours a day can make 18 quilts in 18 days, then in how many days 24 men working 24 hours per day will make 24 quilts?
Numan does 4/ 5 half the work as Gagan in time. If together they take 16 days to complete a piece of work, then how long will Gagan take to complete the...
‘P’ and ‘Q’ together can complete an analysis in 40 days, while ‘Q’ and ‘R’ together can complete the same analysis in 30 days. ‘P’ ...
The efficiency of C is 20% more than the efficiency of D. D alone can complete a piece of work in (y-2) days. The time taken by C alone to complete the ...
‘A’ alone can complete a work in 50 hours. ‘A’ started the work alone and left after working on it for 20 hours. If ‘B’ completed the rest o...
X can do a piece of work in 30 days. He worked at it for 5 days and then Y finished it in 20 days. In how many days can X and Y together finish the work?
A alone can complete 60% of a work in 36 days while B takes 30 days more than A to complete it. If B and C together can complete the work in 40 days, th...
'Preeti' can complete a piece of work in 70 days, while 'Bhanumati' can complete it in 90 days. They both started the work together, but 'Preeti' left a...
5 girls can do a piece of work in 9 days, 4 boys can do the same piece of work in 8 days, 6 men do the same piece of work in 2 days and 4 women can do t...