<span>k+12/k=8
Multiply k to remove the k in one side
</span><span>(k+12/k=8) (k)
</span>Therefore,
k^2+12k-8k=0
Thus,
The equations he must solved now is k^2-8+12=0
Answer:
The price before increase = 1255.5
Step-by-step explanation:
7% of 1350 = 
= 94.5
The price before increase = 1350 - 94.5
The price before increase = 1255.5
The answer is 25/400 because it is 25 green marble and it 400 in all