Private use car in partnership

The question relates to Section C question-Poppy. Poppy used a car for both private and business purposes. TWDV was 8400 And disposal was 5400 Private use was 70% After calculating capital allowances, there was a balancing allowance. In an earlier post I've posted a question regarding special rate pool disposal. And after the disposal we still had to calculate 6% on the balance. In this case, we're calculating balancing allowance. Is it because it's a private use car? And also in short life assets we have balancing allowance and balancing charge. Can you guide me through this? It's a bit confusing. Thank you.