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time taken to complete a work by A alone is 200% more than the time taken by both A and B to complete the work. B is trice as effi

By Isabella

time taken to complete a work by A alone is 200% more than the time taken by both A and B to complete the work. B is trice as efficient as C. B and C together take 15 days to complete the same work. How many days A will take to complete the work?​

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Isabella

im just checking, prime is not divisible by anything and composite is divisible by multiple things right?

construct the circumcircle of angle PQR in which QR=6.5cm angle Q=125° and PQ=4.4 cm​

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