# Worker A takes 8 hours to do a job. Worker B takes 10 hours to do a job. How long should it take both A and B, working together to do same job.

$1\frac{4}{9}$

$2\frac{4}{9}$

$3\frac{4}{9}$

$4\frac{4}{9}$

Please do not use chat terms. Example: avoid using "grt" instead of "great".