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Area of a circle =πr2 => 154 = 22/7 × r 2 =>r 2= 49 => r = 7 cm Therefore the circumference of the circle = 2πr = 2 × 22/7 × 7 = 44 cm
A’ and ‘B’ together can complete a work in 10 days while ‘A’ takes 30 days to complete the same work alone. If ‘C’ is 50% more efficient t...
A and B together can complete a piece of work in 12 days, while B and C together can complete the same work in 15 days. A and C together can complete th...
‘A’ can complete a work in 18 days and is 10% more efficient than ‘B’. ‘A’ and ‘B’ start the work together, but ‘A’ leaves after 15 ...
‘P’ can complete 40% of a task in 24 days, while ‘Q’ can complete 25% of the task in 20 days. How long will it take appro...
'R' takes 20 days to complete a task, and 'A' takes 30 days to do the same task. To finish the job in just 6 days, what percentage increase in their res...
'A' requires 16 more days to finish a task compared to 'B'. When 'A' and 'B' collaborate, they complete the task in 9 days fewer than 'B' would need to ...
A can complete a certain work in 12 days, while B can complete it in 15 days. After working together for 4 days, A leaves and B continues working alone....
Aman is twice as efficient as Suman. Both of them began working together, but Aman stopped after 12 days. Suman then finished the remaining work in 4 da...
A and B together, B and C together and A and C together can complete a piece of work in 14 days, 15 days and 18 days respectively. Find the ratio of the...
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...
