Respuesta :
Answer:
72 houses.
Step-by-step explanation:
We are told that a postal worker can deliver the mail to 18 houses in 15 minutes.
Let us find numbers of mails delivered by postal worker per minute.
[tex]\text{Number of mails delivered per minute}=\frac{18\text{ houses}}{15\text{ minutes}}[/tex]
[tex]\text{Number of mails delivered per minute}=1.2\frac{\text{ houses}}{\text{ minute}}[/tex]
Since we know that 1 hour equals 60 minutes, so we will multiply 1.2 by 60 to find the number mails postal worker will deliver in 1 hour.
[tex]\text{Number of mails delivered in 1 hour}=1.2\frac{\text{ houses}}{\text{ minute}}\times 60\frac{\text{minutes}}{\text{hour}}[/tex]
[tex]\text{Number of mails delivered in 1 hour}=1.2\times 60\frac{\text{ houses}}{\text{hour} }[/tex]
[tex]\text{Number of mails delivered in 1 hour}=72\frac{\text{ houses}}{\text{hour} }[/tex]
Therefore, the postal worker will be able to deliver mails to 72 houses in 1 hour.
