Ian bought a CD of African Traditions for his Project
which cost him 30 South African rand(R), he wants it to be converted into
US Dollars. Convert it using the following Exchange Rate:
1 US dollars = 3 South African rand (R)
Solution Step 1:
3 South
African Rand (R) = 1 US dollars. This is the same as 3:1 or 3/1
Solution Step 2:
3/1 =
30/?
3 x ? = 30 [cross
multiplying]
? = 10
[dividing]
Solution Step 3:
Answer is $10
Try practice problem:
Jorge wants to buy
games CDs and DVDs from China, he has their costs in Chinese yuan (¥).
To estimate the costs in US dollars use the following Exchange Rates: