Question

if z/z+15 = 4/9
then the value of z is
a) 11
b) 12
c) 13
d) 14​

Answer 1

Answer:

$\frac{z}{z + 15} = \frac{4}{9}$

9z = 4z + 60

5z = 60

Z=12

so,

B is the right Answer

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Answer 2

$\frac{z}{z + 15} = \frac{4}{9}$

$9(z) = 4(z + 15)$

$9z = 4z + 60$

$9z - 4z = 60$

$5z = 60$

$z = \frac{60}{5}$

$z = 12$

hope it helps....

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