Average Tutorial part1

Average Tricks

122                              78

    1                              324

Avg                             ?

324 - 78   = 246

246 / 123 = 2

78  + 2     =80

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 22                               45

   1                               ?

Avg                             48

48 - 45 = 3

23 * 3 = 69

69 + 45 = 114

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 27                               x

  1                                117

Avg                             x+3

x + 28 * 3 = 117

x = 117 - 84

x = 33 ;

x + 3 = 36