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Prags · Answer 1 · 2017-03-08T18:32:36+0000

8 1/2 by 11.

Area1 = 8 1/2 × 11

Area1 = 17 / 2 × 11 = 187/2

17/10 by 2 1/5

Area2 = 17/10 × 11/5

Area2 = 17 / 10 × 11/5 = 187/50

Scale factor = Area1 / Area2

= 187/2 ÷ 187/50

= 187/2 × 50/187

= 25

Scale factor = 25

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