Question

the average adult is about 60% water. one liter of water has a mass of 1 kilogram. if a persons body contains 45 liters of water, what is the persons mass in kilograms? enter the correct answer in the box. show hints kg 7 8 9 4 5 6 1 2 3 0

Explanation:

Step1: Determine mass of water

Since 1 liter of water has a mass of 1 kilogram, 45 liters of water have a mass of \( 45 \times 1 = 45 \) kilograms.

Step2: Let total mass be \( x \)

The water mass (45 kg) is 60% of the total mass \( x \). So, \( 0.6x = 45 \).

Step3: Solve for \( x \)

Divide both sides by 0.6: \( x = \frac{45}{0.6} = 75 \).

Answer:

75