Question

The arithmet mean of 20, 30, 45, x is 35 what is x?

Answer 1

x = 45

Explanation:

Formula we use,

→ (Sum of numbers/Total numbers) = 35

Now the value of x will be,

→ (Sum of numbers/Total numbers) = 35

→ (20 + 30 + 45 + x)/4 = 35

→ (95 + x)/4 = 35

→ 95 + x = 35 × 4

→ x = 140 - 95

→ [ x = 45 ]

Hence, the value of x is 45.

Answer 2

• x is 45

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The mean is:

• (20 + 30 + 45 + x)/4 = 35

Simplify and solve for x:

• (95 + x)/4 = 35
• 95 + x = 4*35
• 95 + x = 140
• x = 140 - 95
• x = 45