5 x − ki d ′ s m e a l 4 x − a d u lt m e a l 5 x = 20 ∣ d i v i d e b y 5 x = 4 5 x + 4 x = 9 x = 9 ∗ 4 = 36 T o g e t h er t h ey ha v e 36 m e a l s .
The total number of kids' and adult meals sold at the restaurant is 36. This was determined by using the given ratio of 5:4 for kids' and adult meals respectively. With 20 kids' meals sold, we calculated that 16 adult meals were sold, leading to a final total of 36 meals.
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