Answer: 3 : 37
Explanation:
The shop sold 240 necklaces in a month.
Out of these, 18 were sold online.
The number that was sold offline was therefore:
= 240 - 18
= 222 shop sales
The ratio of online sales to shop sales is therefore:
18 : 222
Take it to simplest form by dividing both sides by their highest common factor of 6:
3 : 37