will someone check my work please?A virus scanning program is checking every file for viruses.

It has completed checking 40% of the files in 300 seconds. How long should it take to check all the files? 950 seconds

Gasoline accounts for 85% of the motor fuel consumed in the
United States every day. If 8,882 thousand barrels (bbl) of motor fuel is consumed each day, how much gasoline is consumed each day in the United States? Round to the nearest barrel. 7550

Jerry earned $18,500 one year and then received a 10.5%
raise. What is his new yearly salary? 20,442.50

1. I get a different answer.

0.4x = 300
x = ?

2. Right.

3. Right.

To find the answer to the first question, we can set up a proportion. Let's assume x represents the number of seconds it will take to check all the files.

We know that 40% of the files were checked in 300 seconds. So, we can set up the proportion:

40/100 = 300/x

To solve for x, we can cross-multiply:

40x = 100 * 300
40x = 30,000

Dividing both sides by 40, we get:

x = 30,000/40
x ≈ 750

Therefore, it should take approximately 750 seconds to check all the files.

Now, moving on to the second question.

We know that gasoline accounts for 85% of the motor fuel consumed in the United States every day. We also know that 8,882 thousand barrels (bbl) of motor fuel is consumed each day.

To find the amount of gasoline consumed, we can set up another proportion:

85/100 = x/8,882

Cross-multiplying gives us:

85 * 8,882 = 100x
755,170 = 100x

Dividing both sides by 100:

x = 755,170/100
x ≈ 7,551.7

Rounding to the nearest barrel, the amount of gasoline consumed each day in the United States is approximately 7,551 barrels.

Lastly, to answer the third question:

Jerry earned $18,500 one year and received a 10.5% raise. To find his new yearly salary, we can calculate the raise amount first:

10.5% of $18,500 = 10.5/100 * $18,500
= 0.105 * $18,500
= $1,942.50

Adding the raise to his initial salary:

$18,500 + $1,942.50 = $20,442.50

Therefore, Jerry's new yearly salary is $20,442.50.