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

### Instruction:
Betty is growing parsnips in her vegetable garden. When the parsnips are grown, they are harvested and bundled into boxes that can hold up to 20 parsnips each. Each harvest, three-quarters of the boxes are full, and the remaining boxes are half-full. She gets an average of 20 boxes each harvest. How many parsnips does Betty grow in an average harvest?

### Response:
 Ikiwa theluthi tatu ya masanduku yamejaa, basi 1 - ¾ = ¼ ya masanduku yamejaa nusu.
Kwa wastani, kila mavuno kuna masanduku 20 * 0.25 = <<20*0.25=5>>5 yaliyojaa nusu.
Hii inamaanisha kuna jumla ya masanduku 20 - 5 yaliyojaa nusu = <<20-5=15>>15 yaliyojaa kabisa.
Jumla ya masanduku yaliyojaa kabisa na yaliyojaa nusu ni 15 masanduku yaliyojaa kabisa * 20 parsnips kwa kila sanduku lililojaa kabisa + 5 masanduku yaliyojaa nusu * 10 parsnips kwa kila sanduku lililojaa nusu = <<15*20+5*10=350>>350 parsnips.