beeside balcony
. fujinawa []fujinawa.jp @
049-281-85853121 .
:2030005020856312120220509.
30 .
(/)Yahoo!
()
place 350-0233 3121 049-281-8585 .
Related Articles
Trending Articles
Let \( d \) be the distance between City A and City B.
Time from A to B = \( \frac{d}{80} \)
Time from B to A = \( \frac{d}{100} \)
Total time = \( \frac{d}{80} + \frac{d}{100} = 9 \)
Finding a common denominator:
\( \frac{5d + 4d}{400} = 9 \)
\( \frac{9d}{400} = 9 \)
\( 9d = 3600 \)
\( d = 400 \)
#### 400 kilometers