By what percentage should a quantity be multiplied by in order to decrease it by 19.75%?
1 answer:
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Answer:
This is not possible because the selling of number of AA batteries cannot be negative.
Step-by-step explanation:
Let us assume that the number of AAA batteries sells be x .
Let us assume that the number of AA batteries sells be y.
As given
Target sells AAA batteries for $1.10 and AA batteries for $0.50. They sold 350 total batteries earning a total of $560.
Equations becomes
x + y = 350
1.10x + 0.50y = 560
Simplify the above equation
110x + 50y = 56000
Two equations becomes
x + y = 350
110x + 50y = 56000
Multiply x + y = 350 by 50 and subtracted from 110x + 50y = 56000 .
110x - 50x + 50y - 50y = 56000 - 17500
60x = 38500
x = 641 .6 (Approx)
Put this value in the equation x + y = 350 .
641.6 + y = 350
y = 350 - 641.6
y = -291.6
This is not possible because the selling of number of AA batteries cannot be negative.
Hello there!
What is 25% of 400?
=
= 100
Thus,
25% of 400 is 100
What is 5% of 20?
Well, we just need to follow the previous steps.
=
Thus,
5% of 20 is 1
I hope this answer helps. Let me know if you have additional questions about the answer. As always, it is my pleasure helping student like you.