Ali earns $80 in 10 hours. How long would it take him to earn $200?

25 hours

Step-by-step explanation:

first you ask yourself that :

if it takes just 10 hrs to make $80 , would it take more or less hours to make $200.

The answer is it will take more hours to make $200,

Based on this idea established: we say if it's giving more then less would divide.

so therefore:

we have

finally we have 25 hours.

Thanks

what is the original number? you forgot to add it.