A ratio of 2:3 is the same as 2/3 now we can divide out 2/3 to .6666666 and then multiply by 10 to get 6.666666 or you could just multiply 10 x 2/3 to get 20/3 and then divide to get 6.66666.
2 + 3 = 5
10 ÷ 5 = 2
2 x 2 = 4
2 x 3 = 6
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