Answer:
Ratio of online sales to shop sales = 3 : 1
Explanation:
Total necklace sold in a month = 240
Necklace sold via shop's website = 180
the rest were sold in a high street shop.
Necklace sold via high street shop = Total necklace sold in a month - Necklace sold via shop's website
= 240 - 180
= 60
Necklace sold via high street shop = 60
Ratio of online sales to shop sales
Necklace sold via shop's website : Necklace sold via high street shop = 180 : 60
= 180 / 60
= 3 / 1
= 3 : 1
Ratio of online sales to shop sales = 3 : 1