Question

3typist working 7 hour a day type thesis in 10 day , for how many hours. Per day should 3 typist work to finish it in 21 days

Answer 1

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*It's a question of inverse variation.

*If number of hours is less than the number of days to complete the work will increase.

Solution:
Let number of hours need to finish the work be
$x$


Then
$x \times 21 = 7 \times 10$
$x = 70 \div 21$
$x = 10 \div 3 \\ = 3.3$
Hence,3.3 hrs will be needed to finish the work.




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