Question
There are a total of 30 Mongolian, Chinese and Italian stalls at a food center. The number of Mongolian stalls is twice the number of Italian stalls. The number of Italian stalls is thrice the number of Chinese stalls. How many more Mongolian than Italian stalls are there at the food center?
4 m

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There are a total of 30 Mongolian, Chinese and Italian stalls at a food center. The number of Mongolian stalls is twice the number of Italian stalls. The number of Italian stalls is thrice the number of Chinese stalls. How many more Mongolian than Italian stalls are there at the food center?