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Circumference of circle = Perimeter of a rectangle = 2πr = 2 × 22/7 × 21 = 132 m Perimeter of a rectangle = 2(l + b) 132 = 2(l + b) 36 + b = 66 B= 66 – 36 = 30 m ∴ Area of the rectangle = l × b = 36 × 30 = 1080 m²
15 men can do a work in 30 days. After 18 days of work, 5 more men were engaged to finish the work. The number of days required to complete the remainin...
Efficiency of A, and B are in the ratio of 3 : 4. If both can do a work together in 30 days. Find out how much days A will take to complete the work alone?
‘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 ...
Ram can do a piece of work in 12 days and Shyam can do the same work in 20 days. They both started work together, Ram left 4 days before the completion ...
A can do 1/4th of a work in 15 days, B can do the 25% of the work in 20 days & C can do 1/5th of the work in 15 days. Who will complete the work fir...
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...
A and B can complete a work together in 18 days. If A alone can complete one-third of the work in ‘x’ days and remaining work is completed b...
Alice can build one section of a wooden fence with a base length of 18 meter and a height of 25 meter in 18 days. Bob can construct 80% of one side of a...
A, B and C alone can complete a work in 30, 60 and 45 days respectively. All of them started working together but after 3 days from start A left the job...
