Car Boot Sales & Maths

Anya and I have recently started selling vintage jewellery at car boot sales.  We have both invested in mixed lots of jewellery purchased at auctions.  Anya has purchased her own jewellery using her pocket money and savings.  Anya demonstrated a real ability to  communicate with the customers, maths and business skills at the car boot sale.  She was able to work out her own prices based on what she paid, upsell by offering customer discounts for bulk buys, work out the total costs on large sales,  check for fake notes and the correct change.