On holiday, Mr Baker buys some perfume for 12 dollars and a book for 5 dollars.
He calculates that the perfume costs £4.80 and the book costs £2.00.
How much would a 7 dollar T-shirt cost?
12/4.8 = 2.5 dollars/pound
5/2 = 2.5 dollars /pound (glad that was the same :)
so
7 dollar * 1pound/2.5 dollars = 2.80 pounds
1. On holiday, Mr Baker buys some perfume for 12 dollars and a book for 5 dollars.
He calculates that the perfume costs £4.80 and the book costs £2.00.
How much would a 7 dollar T-shirt cost?
The T-shirt would cost £2.80
To calculate the cost of a $7 T-shirt, we need to find the exchange rate between dollars and pounds. We can do this by using the information given about the cost of the perfume and the book.
First, let's calculate the exchange rate:
The perfume costs £4.80 and the book costs £2.00.
Therefore, £4.80 represents $12, and £2.00 represents $5.
To find the exchange rate, we can use the formula:
Exchange rate = Cost in dollars / Cost in pounds
For the perfume:
Exchange rate for the perfume = $12 / £4.80
Simplifying this, we get:
Exchange rate for the perfume = $2.50
Now, to find the exchange rate for the T-shirt, we can divide the cost in dollars by this exchange rate:
Cost of T-shirt in pounds = $7 / Exchange rate for the perfume
Substituting the value of the exchange rate, we get:
Cost of T-shirt in pounds = $7 / $2.50
Calculating this, we get:
Cost of T-shirt in pounds = £2.80
Therefore, the 7-dollar T-shirt would cost £2.80.