Answer:
X = -7
Step-by-step explanation:
a / (a - 4) = a(a + 4) / ((a - 4)(a + 4)) = (a^2 + 4a) / (a^2 - 16) = -(a^2 + 4a) / (16 - a^2)
If we multiply the ratio
... 25 g : 1 cm
by 5, we get
... 125 g : 5 cm
The number on the left is 75 g more than 50 g.
6.32 hours