Question

The government has allocated its budget as follows:

defense 40%
education 10%
social security 30%
public investment 13%

If the budget is $150 billion, how much is left for other programs and
activities?

Answer 1

10 billion

Explanation:

It is important to take 40% from 150 billion, and then 10% also from 150 billion, and not what is left after the 40% deduction.

I will write 150 Billion as 150b.

Therefore: 150b x 0.4 (0.4 is a change factor to find 40%). will give you 60000000000. or 60 billion.

150b - 60000000000 will give you 90 billion.

Then, 150 billion times 0,1 (change factor for 10%). Will give you 15000000000 or 15 billion.

Now do 90 billion minus 15 billion = 75 billion.

Now do the same for the rest.

13% of 150 billion is 19,5 billion. 75 billion - 19,5 billion = 55 billion.

30% of 150 billion is 45 billion. 55 billion - 45 billion is 10 billion.

Therefore 10 Billion is left over.