cash budget

Given the following information below,
Cash at bank on 1st $ 30,000
2019

Salaries and wages $ 20,000
estimated

Interest payable August $ 10,000
2018

September October November December

$ $ $ $

Estimated Cash Sales – 880,000 662,000 242,000

Credit sales 100,000 80,000 140,000 120,000

Purchases 160,000 170,000 240,000 180,000

Other expenses – 20,000 22,000 21,000

Additional information

Credit sales are collected 50% in the month of sales made 50% in the month following collection .From credit sales are to 5% discount if, payment is received in the month of sales and 2.5% if, payment is received in the following month. Creditors paid either on a prompt, or, 30 day’s credit basis. It is estimated that, 10% of the creditors are in the proper prompt category.
Required:
Prepare a cash budget for the quarter ended 31st December, 2017 based on the Information above.

In Bpp revision kit question no 10b.20 it says
The following data has been extracted from the payable’s records of X co.
Invoice paid in the month of purchase 25%
Invoice paid in the 1st month after purchase 70%
Invoice paid in the 2nd month after purchase 5%

My question is if questions says payable records that means it is 100% credit payments , not like 25% is cash and rest 75% is credit?
Because answers has been solved as
25% x 250,000$
70% x 250,000$
5% x 250,000$