Question

In {(-25) + 11} x20 = (-25)x 20 +________, the term that fill in the blank is

Answer 1

Mean of 20 numbers= 18

Hence, (Summation of 20 numbers)÷20=18

Now, Mean of 20 numbers after adding three to the first ten numbers,

(Summation of 20 numbers)+(30)÷20

According to distributive law,

Summation of 20 numbers÷20 + 30÷20

Substituting Summation of 20 numbers÷20 = 18

We get,

18+(30÷20)

=18+1.5

=19.5. ANSWER

Answer 2

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Hey Mate Here Is Your Answer

{(-25) + 11} x20 = (-25)x 20 +11