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satela [25.4K]
2 years ago
11

You own Everything's Coming Up Roses flower shop. Your employee makes 4 deliveries per hour. The distance between the shop and t

he first delivery is 12 1/3 miles. The distance between the next three deliveries is 8 3/4 miles; 17 2/8 miles; and 23 2/3 miles respectively. The distance from the final delivery to the shop is 10 5/10 miles. What is the average distance for all segments of this trip?
Mathematics
1 answer:
8090 [49]2 years ago
4 0
Given:
<span>distance between the shop and the first delivery is 12 1/3 miles.
The distance between the next three deliveries is 8 3/4 miles; 17 2/8 miles; and 23 2/3 miles respectively.
 The distance from the final delivery to the shop is 10 5/10 miles

We simply add up all the distances and divide the sum by 5. However, we need to convert each mixed fractions into it improper fraction.

12 1/3 </span>→ 37/3
8 3/4 → 35/4
17 2/8 → simplify: 17 1/4 → 69/4
23 2/3 → 71/3
10 5/10 → simplify: 10 1/2 → 21/2

37/3 + 35/4 + 69/4 + 71/3 + 21/2

Find the LCD or least common denominator. It is the number that can factor all denominators. 

LCD is 12.

(37/3 * 4/4) + (<span>35/4 * 3/3) + (69/4 * 3/3) + (71/3 * 4/4) + (21/2 * 6/6)</span> 

148/12 + 105/12 + 207/12 + 284/12 + 126/12 = 870 / 12 

Average distance: 
870 / 12  ÷ 5 = 870 / 12 * 1/5 = 870 / 60 = 14.5 miles

The average distance for all segments of the trip is 14.5 miles. 

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