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01 Nov 2023, 01:30
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70% (01:35) correct
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Working at a constant rate, pipe B can fill a container in 100 minutes. How many minutes does it take pipe A, working at its own constant rate, to fill the same container?
(1) Pipe A and pipe B together fill the container in one-fourth the time it takes pipe A alone.
(2) Pipe A and pipe B together fill the container in three-fourths the time it takes pipe B alone.
(1) Pipe A and pipe B together fill the container in one-fourth the time it takes pipe A alone.
(2) Pipe A and pipe B together fill the container in three-fourths the time it takes pipe B alone.
06 Nov 2023, 09:39
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denote a as number of minute that pipe A fill the container alone
from (i) we have (1/100 + 1/a)=4*1/a
from (i) we have (1/100 + 1/a)=4*1/a
