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Jamal needs 8 hours to do a job. Kamal takes 10 hours to do the same job. How long should it take Kamal & Jamal working together to do the job?

Jamal needs 8 hours to do a job. Kamal takes 10 hours to do the same job. How long should it take Kamal & Jamal working together to do the job? Correct Answer 4 4/9 hours

Jamal 1 ঘণ্টায় করে 18 এবং Kamal 1 ঘন্টায় করে 110 of the job (18 + 110) part of the job উভয়ে করে 1 ঘন্টায় so 1 whole part of the job উভয়ে করে (18 + 110) - 1 = 449 ঘন্টা

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