A certain country had a total annual expenditure…
The key to solving this problem is to accurately translate what is being asked to a mathematical expression. We need to determine the “per capita expenditure”. As an expression this is:
(Total annual expenditure)/(Total population)= per capita expenditure
The easiest first step is to express 240 million as a number times a power of 10 since the other number is in this format.
240 million = 240,000,000
Since we have a 24 with 7 zeroes we can write this as:
24 x 10^7
Next, we should adjust 1.2 x 10^12 to make it a more usable number in our expression.
1.2 x 10^12 = 120 x 10^10
We now can solve:
(Total annual expenditure)/(Total population)
(120 x 10^10)/(24 x 10^7)
5 x 10^3
5 x 1,000 = 5,000