work in 4 hours a day Sunny can copy of food in 15 days how many hour a day should . She was so as to finish the work in 12 days .
it is direct or inverse propagation
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work in 4 hours a day Sunny can copy of food in 15 days how many hour a day should . She was so as to finish the work in 12 days .
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Sunny works (4×15 )=60 hours to complete the work
So he have to work 60/12 =5 hours everyday to complete the work in 12 days.
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