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Questions  >>  Olympiad-Math  >>  Class 6  >>  Math  >>  Analytical Reasoning
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Q)

What number must be added to 6, 16 and 8 to get an average of 13?


( A ) 18
( B ) 22
( C ) 25
( D ) 20

1 Answer

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A)
22 must be added. Let the number be x. 6+16+8+x÷4=13 30+x=13×4 30+x=52 x=52-30 x=22
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