What part do you have trouble with
It also belongs to set of natural numbers.
Baja a did is die a Ud VI's. Aid f wiandof
Answer:
Step-by-step explanation:
Given
New mail carrier takes 4 hours for delivery i.e.
New mail carrier completes part of work in 1 hour
Old mail carrier takes 3 hours for delivery i.e.
mail carrier completes part of work in 1 hour
If they work together, they complete the work in x hours i.e.
Answer:
B or the second one i think
Step-by-step explanation: