What is the answer to,,5/17 × -7 =??
1 answer:
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Answer:
60 m/h
Step-by-step explanation:
1. the basic formula is Time=Distance/Speed;
2. total time is time1 (for 84 miles)+time2 (for 130 miles)=time (4 hours);
3. the time for the first 84 mi. is time1=84/S;
4. the time for the rest 130 mi. is time2=130/(S-10);
5. using all the data of items 2-4, it is possible to substitute into the basic formula and resolve an equation:
note, that the value of speed has one condition: s>10. It means, the only value is true: 60 miles per hour.
For this case we must find the unit cost of juice box of each option and compare:
Option A: 2 juice boxes for $ 0.66
Option B: 6 juice boxes for $ 1.92
Option C: 9 juice boxes for $ 2.97
Option D: 12 juice boxes for $ 4.20
The most feasible option is B. That is, buy 6 boxes for $1.92
Answer:
Option B