Answer:
Refer the above attachment for answer
Total area of zone and playground, (x+50)(x+30);
and this whole area is twice the area of the playground, consistent with description.
highlight_green%28%28x%2B50%29%28x%2B30%29=2%2A50%2A30%29;
Solve for x.
Answer:
$72
Step-by-step explanation:
100 - 10% = 90
90 - 20% = 72