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12. Joven can paint his room in 8
hours. After working for 4 hours, he
called a painter to finish the work.
The painter finishes the work in two
hours. How long would it take the
painter to finish the whole job had he
worked alone from the start? *
O a. 4 hours
O b. 6 hours
O c. 8 hours
O d. 10 hours​