The arithmetic mean of two numbers is 5.6. It is known that the first number is 60% of their total. Find the 2nd number.

To solve this problem, remember, in order to find the arithmetic mean, you need to add all the numbers and divide their sum by their number. Let’s calculate what the sum of two numbers is, knowing that the arithmetic mean of these numbers is 5.6.

x = 5.6 * 2 = 11.2 cm.

Let’s calculate what the first number is, knowing that it is 60% of the amount. To find the percentage of the number, you need to multiply this number by the percentage and divide by one hundred.

11.2 * 60/100 = 11.2 * 0.6 = 6.72.

Let’s calculate what the second number is.

11.2 – 6.72 = 4.48.

Answer: 4.48; 6.72.