Question

Is the mean of 5 numbers is 10 if each number is decreased by 3 the mean of the new set of numbers

Answer 1

Answer: 7

Step-by-step explanation:

Find the sum of the 5 numbers:

Mean of the 5 numbers = 10

Sum of the 5 numbers = 10 x 5 = 50

.

Find the decrease in amount:

Decrease of 1 number = 3

Decrease of 5 numbers = 3 x 5 = 15

.

Find the new mean:

Sum of the new 5 numbers = 50 - 15 = 35

Mean of the new 5 numbers = 35 ÷ 5 = 7

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