nln math

Question 1

An ideal gas occupies a volume of 0.50 liter (L) at a pressure of 0.20 atmosphere. What volume will the gas occupy at 0.40 atmosphere if the temperature remains constant?

Answer 1

.25L

Question 2

Jose, Louis, and Li bought a car to travel to and from work. If Jose paid 1/3 and Louis paid 2/5 of the cost, what fraction did Li pay?

Answer 2

4/15

Question 3

.03% of 1,500 is

Answer 3

.45

Question 4

The perimeter of a rectangle is 240 inches. If the length is twice the width, what are the dimensions of the rectangle?

Answer 4

40in by 80in

Question 5

A patient’s room is 10 feet (ft) wide and 15 ft long. If all rooms are built to the same proportions, what is the length of a room that is 18 ft wide?

Answer 5

27 ft

Question 6

A clerk receives a salary of $1,750.00 per month. Last year, the clerk worked overtime for the last 3 months, earning $425.00 per extra month. What was the clerk’s total salary for the 12-month year?

Answer 6

22,275

Question 7

The concentration of allergens in an experimental sample of air is one part per billion. Which of these mathematical notations represents this concentration?

Answer 7

1.0 x 10^-9

Question 8

An insecticide label specifies a dilution ratio of 1 1/2 teaspoons of insecticide per gallon of water. How much insecticide should be added to a one-half gallon of water?

Answer 8

3/4 teaspoon