YOU SAID:

I went to the pet store and bought 10 rats and 15 mice

INTO JAPANESE

ペットショップに行って、ネズミ10匹とネズミ15匹を買いました

BACK INTO ENGLISH

I went to a pet shop and bought 10 mice and 15 mice

INTO JAPANESE

ペットショップに行って、10匹と15匹のネズミを買いました

BACK INTO ENGLISH

I went to a pet shop and bought 10 and 15 mice

INTO JAPANESE

ペットショップに行って、10匹と15匹のネズミを買いました

BACK INTO ENGLISH

I went to a pet shop and bought 10 and 15 mice