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ki77a [65]
3 years ago
14

Kong took 15, percent fewer seconds than Nolan took to complete his multiplication timed test. Kong took 85 seconds.

Mathematics
2 answers:
Varvara68 [4.7K]3 years ago
4 0

Kong took 85 seconds to complete his multiplication timed test. Consider the proportion:

Nolan took x seconds - 100%

Kong took 85 seconds - 100%-15%=85%

That is mathematically

\dfrac{x}{85}=\dfrac{100}{85},\\ \\x=\dfrac{100\cdot 85}{85}=100\ seconds.

Answer: Nolan took 100 seconds to complete the test.

aksik [14]3 years ago
4 0

Nolan took 100 seconds. Is what khan academy says.

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