Question

18

Andy flies from the UK to Japan.
His plane ticket costs £554.
Andy then flies from Japan to Australia.
His plane ticket costs 70 140 Japanese Yen.
The exchange rate is £1 = 140 Japanese Yen.
Leila flies from the UK to Australia.
Her plane ticket costs 1860 Australian dollars.
The exchange rate is 1 Australian dollar = £0.62.
Who pays more to fly from the UK to Australia, Andy or Leila?
You must show clearly how you get your answer.

Answer 1

Answer: Leia pays more to fly from the UK to Australia

Explanation:

We have two persons, Andy and Leila; both travel from UK to Australia but in different ways:

For Andy:

-He first flies from UK to Japan and the cost of the ticket is
`\£ 554`

-Then he flies from Japan to Australia and the cost of the ticket is
`70140 Yen`

So, the cost of Andy's trip is:

`\£ 554+70140 Yen` (1)

Taking into account that we have to use the same units to sum two quantities, we have to convert the Yens to
`\£`; knowing that
`\£ 1=140 Yen`:

`70140 Yen (\£ 1)/(140 Yen)=\£501`

Then, (1) is rewritten as:

`\£ 554+\£501=\£1055` (2) This is the total cost of Andy's trip

For Leila:

She flies directly from UK to Australia and the cost of her ticket is
`\$ 1860` (Australian dollars)

Taking into account that we have the price of Andy's trip in
`\£`, we have to convert the Australian dollars to
`\£`, in order to compare.

So, knowing that
`\$ 1=\£ 0.62` we have:

`\$ 1860 (\£ 0.62)/(\$ 1)=\£1153.2` (3) This is the total cost of Leila's trip

Hence, comparing (2) and (3) we can see that Leila paid more to fly from UK to Australia.