أنفق تيم 50.00 دولار على الطعام الصيني للإ:');
' Taking it one step at a time, here’s how we can approach this problem:

1. **Calculate the Area**:
   First, find the area of the rectangle. The area is calculated by multiplying the length by the width. In this case, the area is \(90 \times 60 = 5400\) square meters.

2. **Calculate the Distance if All Walkers Had the Same Speed**:
   We're told that \(4\) walkers walked at different speeds and covered \(600\) meters each in one hour. So, their total distance covered is \(4 \times 600 = 2400\) meters. If all \(9\) walkers walked at the same speed, the total distance covered by all would be the same, which is \(2400\) meters.

3. **Calculate the Number of Walks for Each Walker**:
   Since the area they walked around is \(5400\) square meters and the rectangle's perimeter (which they walked around) is given by \(2 \times (length + width) = 2 \times (90 + 60) = 300\) meters, each walk around the field is \(300\) meters.

4. **Determine the Number of Walks Needed**:
   For a total of \(2400\) meters covered by all walkers together, the number of complete walks around the field (of \(300\) meters each) needed would be \(2400 / 300 = 8\) walks.

5. **Calculate the Time for \(8\) Walks**:
   Since one walk takes \(1\) hour, \(8\) walks would take \(8\) hours.

But there's a catch here based on how the problem is stated. The problem actually suggests that each of the \(4\) faster walkers can walk the whole field in \(1\) hour, which means each walker, if all \(9\) had that speed, would walk \(8\) times around the field (to cover \(2400\) meters in \(8\) hours). However, since the problem initially states something different about distances covered, we conclude:

In order for the total distance walked by all walkers to remain the same (\(2400\) meters) as if they walked at the same speed, the number of walks (therefore
أنفق 50.00 دولارًا \%80 من وجبة الطعام كانت لألواح الطعام الرئيسية لذا أنفق 50 * .80 = 40.00 دولارًا على ألواح الطعام الرئيسية
أنفق 50.00 دولارًا و 40.00 دولارًا كانت على ألواح الطعام الرئيسية لذا يبقى 50 - 40 = 10.00 دولارًا للبلالين
كل بلالي بنفس القيمة و أنفق 10.00 دولارًا بالكامل لذا فإن كل بلالي يقدر ب 10/2 = 5.00 دولار
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