Answer: 26
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Explanation:
Jump to the last part of the question where it asks "how many pounds of type A coffee were used?". Since this is the goal we want to reach, let's make x the amount of type A used (in pounds).
This means that 3*x pounds of coffee were used for type B, since 3 times as much type B was used as type A. Example: if you use 2 pounds of type A, then you'll have 6 pounds of type B.
Type A costs 4.45 dollars per pound. If you use up x pounds of it then it costs a total of 4.45*x dollars. Type B costs 5.80 dollars per pound and if you use 3*x pounds, then it costs you 5.80*3x = 17.40x dollars. The total cost of both types is going to be 4.45x+17.40x = 21.85x dollars.
Set this equal to 568.10 and divide both sides by 21.85 to isolate x
21.85x = 568.10
21.85x/21.85 = 568.10/21.85
x = 26
We used 26 pounds of type A coffee
Answer:
12.57
Step-by-step explanation:
Subtract 5 from both sides and divide -7/2
0.9(P - 15) + 0.05P[0.9(P - 15)] + 0.05P
0.9(P - 15)(1 + 0.05P) + 0.05P
From this, we can see that there is a 10% discount indicated by multiplication by 0.9 and a flat discount of $15 from (P - 15)
However, the last term indicates that the delivery cost is 5% that of the original price.
Answer:
yes i agree
Step-by-step explanation:
easier way is .25x60
