Ratio

Algebra Level 2

If A:B=2:3,B:C=5:7A:B=2:3, B:C=5:7 and C:D=3:10C:D=3:10, then find the value of A:DA:D.

If the ratio can be written in the form X:YX:Y, where XX and YY are coprime positive integers, submit the answer as X+YX+Y.

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