Kenji has 2500 Japanese yen. If 1 US dollar equals 90.39 Japanese yen, about how many dollars can Kenji buy for his yen?

Question

whpalmer4 · Answer

$$2500 \text{ yen} * \frac{1 \text{ dollar}}{90.39 \text{ yen }} = \text{???}\text{ dollar}$$

anonymous · Answer

Kenji can buy $27.65 with his 2500 yen     but then 2500/90.39=27.66

calculusxy · Answer

snce you want to know how much usd is needed, you want to dIvIde the amount ofyen by the amount of usdfor one yen

anonymous · Answer

Exactly ^

whpalmer4 · Answer

@calculusxy @angelicmelody no, that calculation is incorrect.  you'd be dividing

$$\frac{\text{yen}}{\frac{\text{usd}}{\text{yen}}}$$ which gives you $$\frac{\text{yen}^2}{\text{usd}}$$

Dimensional analysis is your friend.

anonymous · Answer

ah yeah i did do it wrong.. gomenasai im half japanese myself

anonymous · Answer

gomenasai means im very sorry/sorry  ect btw  @whpalmer4

whpalmer4 · Answer

the first one you did is right — it's equivalent to mine.  

My sweetie's family name is Murakami, so I've encountered "gomenasai" before :-)