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

### Instruction:
Betty has 20 books, and her sister has 1/4 times more books than Betty. What's the total number of books the two have?

### Response:
 Dada yake Betty ana vitabu 1/4 zaidi ya Betty, ambayo inamaanisha ana vitabu 20*1/4 = <<20*1/4=5>>5 zaidi.
Jumla ya vitabu ambavyo dada yake Betty ana ni vitabu 20+5 = <<20+5=25>>25.
Pamoja, wawili hao wana vitabu 25+20 = <<25+20=45>>45.