Question

Olive oil costs £3.50 for 1 litrehow much 200 ml of olive oil cost

Answer 1

Data:
1 litre = 1000 mL

If:

1000 mL → £3.50
200 mL → y

Solving: Rule of three (directly proportional)


`(1000)/(200) = (3.50)/(y)`

Product of extremes equals product of means:


`1000*y = 3.50*200`

`1000y = 700`

`y = (700)/(1000)`

`y = 0.7\to \boxed{\boxed{y = \£0.70}}\end{array}}\qquad\quad\checkmark`

Answer 2

3.50/5=£0.7

We divided by 5 because there is 1000 ml in 1 litre and we have to find out how much is in 200 ml.

The final answer is £0.7 for 200 ml