Question

Z upon Z +15 is equal to 4 upon 9

Answer 1

Answer:

Z = 12

Step-by-step explanation:

Since, Z / Z + 15 = 4 / 9

On cross - multiplying, we get ;

=> 9 Z = 4 (Z + 15)

So, 9 Z = 4 Z + 60

Therefore, 9 Z - 4 Z = 60

=> 5 Z = 60

=> Z = 60 / 5

=> Z = 12

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