Hello!
Olive oil costs £3.50 for 1 litrehow much 200 ml of olive oil cost
Data:
1 litre = 1000 mL
If:
1000 mL → £ 3.50
200 mL → y
Solving: Rule of three (directly proportional)

Product of extremes equals product of means:




________________________________
I Hope this helps, greetings ... Dexteright02! =)