Friday, January 31, 2014

WASTANI A10

Tafuta wastani wa 13 na 15.

Suluhu

13 + 15 = 28

Jumla ya namba = 28
Idadi ya namba = 2

Wastani = Jumla ya namba ÷ Idadi ya namba
                = 28 ÷ 2   
                = 14


Hivyo wastani ni 14
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