Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Rylee is bored and decides to count the number of leaves falling off the tree in her backyard. 7 leaves fall in the first hour. For the second and third hour, the leaves fall at a rate of 4 per hour. What is the average number of leaves which fell per hour?

### Response:
 Majani 7 yamedondoka katika saa ya kwanza.
Majani 4 yamedondoka katika saa ya pili.
Majani 4 yamedondoka katika saa ya tatu.
Jumla ya majani 15 yamedondoka.
Wastani wa majani yanayodondoka kwa saa ni 5 majani kwa saa kwa sababu 15 / 3 = <<15/3=5>>5.