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Let the two numbers be x and y,

Then:

  1. xy = 0.2
  2. x/y = 0.8 → x = 0.8y
Substituting for x found in (2) in (1) gives:

(0.8y)y = 0.2

→ 0.8y² = 0.2

→ y² = 0.2 ÷ 0.8 = 0.25

→ y = ±0.5

→ x = 0.8 × ±0.5 = ± 0.4

→ the two decimals are:

0.4 and 0.5

or:

-0.4 and -0.5

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6y ago
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6y ago

The two are 0.4 and 0.5

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Q: What are two decimals that had a product of .2 and a quotient of.8?
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