Bala can embroider a shawl in 10 days. Her sister Renu can do the job in 15 days.
They start embroidering the shawl together, but two days later Renu gives up the work.
In how many days will Bala finish the remaining work of embroidering the shawl?
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according to the question
work done by Bala in one day = 1/10
work done by Renu in one day = 1/15
work done in 2 days = 2/10 + 2/15
= 6+4/30
= 10/30
= 1/3
work left = 1 - 1/3
= 3-1/3
= 2/3
time taken by Renu to do rest of the work = > x/15 = 2/3
x = 2/3 * 15
x = 10
therefore the rest of the work took 10 days for Bala to finish
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