A report

Maricris can type a committee report in 5 hours. Jane helped Maricris and together they finished the report in 3 hours. How long would it take Jane to complete the report she had worked alone?

Correct result:

J =  7.5 h


3 (1J+15)=1  1J=1/31/5  J=11/31/5=152=152 h=7.5 h

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