Question no. 2 of page no. 77 from the chapter "Average" of textbook "Shaping Maths AB 5B Part I - Solutions" Solve this.

Average=Sum of the dataNumber of data
 
a)
240 km, 300 km, 200 km, 280 km and 200 km

240 + 300 + 200 + 280 + 200 = 1220

The sum is 1220 km.

1220 km ÷ 5 = 244 km

The average is 244 km.
 
b)
$4.85, $3.65 and $6.20

4.85 + 3.65 + 6.20 = 14.7

The sum is $14.7.

$14.7 ÷ 3 = $4.9

The average is $4.9.
 

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