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If $x : y = 4$ : 7 and $y : z = 14$ : 15, what is $x : z$ in simplest form?

Competition practiceRatio, Proportion & Mixtures

A8:15
B4:15
C2:3
D15:8

Step-by-Step Solution

Make

y

common (LCM of 7 and 14 is 14):

x : y : z = 8

: 14 : 15, so

x : z = 8 : 15

.

Answer: A) 8:15

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