Answer:
A 18%
Step-by-step explanation:
I believe it should be A because there is no specific type a marble specified therefore if you do
12/33--> 0.36 times 100= 36 % which isn't an option
15/33->0.45 times 100= 45 % which also isn't an option
6/33= 0.18 times 100= 18% this is the only option given
C is the answer, just plug every single answer option into the equation and solve each one then u could find the answer
Given that Noemi makes a bracelet that averages $0.60 per bead, we need to write an equation that models this average bead cost. This can be found by taking the total cost of the beads and dividing it by the number of beads used.
1. The total cost of the beads may be found by multiplying the price of each type of bead by the number used, and then adding these values together. Thus:
Total Cost = 0.75x + 3*0.3
= 0.75x + 0.9
2. Total number of beads = x + 3
3. Thus, the average cost is:
(0.75x + 0.9)/(x + 3)
4. Using the value of the average cost per bead given to us ($0.60), we can now write up the full equation:
0.6 = (0.75x + 0.9)/(x + 3)
7/8 is 0.875 so it would be about 36.57
Davie will take 80/20= 4 hours to finish the tour. Horatio has only 2 and 1/2 hours to cover the same 80 miles. (80)/(2.5)= 32 miles per hour.
