1987 AJHSME Problems/Problem 14

Revision as of 10:03, 14 March 2009 by 5849206328x (talk | contribs) (New page: ==Problem== A computer can do <math>10,000</math> additions per second. How many additions can it do in one hour? <math>\text{(A)}\ 6\text{ million} \qquad \text{(B)}\ 36\text{ million}...)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Problem

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

$\text{(A)}\ 6\text{ million} \qquad \text{(B)}\ 36\text{ million} \qquad \text{(C)}\ 60\text{ million} \qquad \text{(D)}\ 216\text{ million} \qquad \text{(E)}\ 360\text{ million}$

Solution

There are $3600$ seconds per hour, so we have \begin{align*} \frac{3600\text{ seconds}}{\text{hour}}\cdot \frac{10,000\text{ additions}}{\text{second}} &= \frac{36,000,000\text{ additions}}{\text{hour}} \\ &= 36\text{ million additions per hour}  \end{align*}

$\boxed{\text{B}}$

See Also

1987 AJHSME Problems