A jewellery shop sells 240 necklaces in a month. 18 of the necklaces were sold via the shop's website, the rest were sold in high street shop. Work out the ratio of the online sales to shop sales. Give you answer in its simplest form.

3 : 37

Step-by-step 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

see explanation (please confirm if I read you problem correctly)

Step-by-step explanation:

150 kilometers

60 kph

tank is 20 liters

6 km/l

150/6 = 25 liters needed

$60/l

you will need to get 5 more liters of fuel

total cost 25 x .60 =  $15