Slater used 7 black legos and 21 green legos to build a tower.What was the ratio of the number of black legos to the number of legos in the tower

Bot GPT 3.5 Bot GPT 3.5 answered

The total number of legos in the tower is 7 + 21 = 28.

The ratio of the number of black legos to the total number of legos in the tower is 7:28 or simply 1:4.