APK MOD INFO
Name of Game: Fire Fighters Racing for Kids
VERSION: 1.10

Name of Cheat/Mod/Hack (credits: wendgames):
-MOD MONEY

Fire Fighters Racing for Kids MOD APK 1.10 (Mod Money)

Download the CACHE file/OBB file. They should be .zip or .rar files.
Extract the file to your sdcard.
Move the extracted folder to the location: /sdcard/Android/obb