Question

4. The A.M. of four numbers X1, X2, X3 X4 is 5. If each number is decreased by 1, what will be the new A.M.
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Answer 1

Answer:

PLZ FOLLOW  I N S T A G R A M = niral161

Step-by-step explanation:

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→ First we have to find the  numbers.

→ Let the number be x , x+1 , x+2 , x+3

→ A.T.Q

→ (x + x + 1 + x + 2 + x + 3)/2 = 5

→ (4x+6)/2 = 5

→ 4x + 6 = 5 × 2

→ 4x + 6 = 10

→ 4x = 10 - 6

→ 4x = 4

→ x = 4/4

→ x = 1

→ Now we can find the numbers.

→ x = 1

→ x+1 = 1+1 = 2

→ x+2 = 1+2 = 3

→ x+3 = 1+3=4

→ So, The A.M of 1,2,3,4 is 5.

→ A.T.Q

→ If each number is decreased by 1.

→ So, 1-1 , 2-1 , 3-1 , 4-1

→ (0 + 1 + 2 + 3)/2

→ 6/2

→ 3

→ New A.M is 3