1987 AMC 8 Problem 14

Attempt Problem 14 of the 1987 AMC 8 below, then check your answer against the professionally curated solution from LIVE by Po-Shen Loh. You can also try the full timed exam, view all 1987 AMC 8 solutions, or check the answer key.

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14.

A computer can do 10,00010{,}000 additions per second. How many additions can it do in one hour?

66 million

3636 million

6060 million

216216 million

360360 million

Answer: B
Concepts:rateunit conversion

Difficulty rating: 730

Solution:

One hour has 36003600 seconds, so the computer does 10,000×3600=36,000,00010{,}000 \times 3600 = 36{,}000{,}000 additions.

That is 3636 million.

Thus, the correct answer is B .

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