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In a GP each term is the previous term multiplied by a constant.

Let the common difference be r, then:

x = 5r

y = xr = 5rr = 5r²

40 = yr = 5r²r = 5r³

→ 5r³ = 40

→ r³ = 8

→ r = 2

→ x = 5 × 2 = 10

→ y = 10 × 2 = 20

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โˆ™ 2017-09-07 18:39:08
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Q: What are x and y if 5 x y 40 are in a Geometric Progression?
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