Question

If X: Y = 7:9 and Y:Z=15:7, find X:Z.

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PLS GIVE THE ANSWER IN EXPLAINATION
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Answer 1

Answer:

$5 \div 3$

Step-by-step explanation:

see the explanation

Answer 2

Answer:

X:Y = 7:9 and Y:Z = 15:7

$→\frac{X}{Y} = \frac{7}{9} \\→\frac{Y}{Z} = \frac{15}{7} \\ \frac{X}{Y} \times \frac{Y}{Z} = \frac{7}{9} \times \frac{15}{7} \\ \frac{XY}{YZ} = \frac{105}{63} \\ \boxed{ \frac{X}{Z} = \frac{5}{3}}$

X:Z = 5:3

• X:Z = 5:3 is the right answer.