Question

If x: y = 7:8 and y: z = 9:10, find x:y:z
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Answer 1

9514 1404 393

Answer:

x : y : z = 63 : 72 : 80

Explanation:

We can make the y-value the same by multiplying the first proportion by 9 and the second by 8.

x : y = 63 : 72

y : z = 72 : 80

Now, we can write ...

x : y : z = 63 : 72 : 80