PLEEEEEEASE HELP A square rug covers 80 square feet of floor. What is the approximate length of one side of the rug? (Approximat
e to the nearest hundredth foot.)
O 8.91 feet
O 8.92 feet
O 8.93 feet
O 8.94 feet
O 8.91 feet
O 8.92 feet
O 8.93 feet
O 8.94 feet
1 answer:
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Answer:
Ann would need 3 h to complete the remainder of the Job.
Step-by-step explanation:
Step 1.
The "speed" that each girl has to do the work is determined as:
- Tina:
, it means that Tina complete one twelveth of the job each hour.
- Ann:
, it means the Ann completes one eighth of the job each hour.
Step 2.
The amount of work done by Tina in 9 hours, is obtain multiplying by the "speed" calculated in step 1:
Amount of work done= . It means that <em>Tina completes two thirds of the work in 9 h.</em>
Step 3.
The remaining job is calculated as . It means that <em>still remains is one third of the job to be completed</em>.
Step 4.
The time required for Ann to complete the job is calculated dividing the remaining of the job by the "speed" of Ann to do the job.
. It means that <em>Ann would complete the job in another 3 hours</em>.