Answer: For the sum of 130
First: $90
Second: $40
Step-by-step explanation:
We write equations for each part of this situation.
<u>The Total Charge</u>
Together they charged 1550. This means 1550 is made up of the first mechanics rate for 15 hours and the second's rate for 5 hours. Lets call the first's rate a, so he charges 15a. The second's let's call b. He charges 5b. We add them together 15a+5b=1550.
<u>The Sum of the Rates</u>
Since the first's rate is a and the second is b, we can write a+b=130 since their sum is 130.
We solve for a and b by substituting one equation into another. Solve for the variable. Then substitute the value into the equation to find the other variable.
For a+b=130, rearrange to b=130-a and substitute into 15a+5b=1550.
15a + 5 (130-a)=1550
15a+650-5a=1550
10a+650-650=1550-650
10a=900
a=$90 was charged by the first mechanic.
We substitute to find the second mechanic's rate.
90+b=130
90-90+b=130-90
b= $40 was charged by the second mechanic
The percentage discount allowed by the wholesaler is 1%
<h3>Percentage</h3>
25 naira = 25 × 100
= 2500 Kobo
Percentage discount allowed = 25 / 2500 × 100
= 0.01 × 100
= 1%
Therefore, the percentage discount allowed is 1%
Learn more about percentage:
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Answer:
The answer is D. 2
Step-by-step explanation:
exponential form
exponents equal
move constant to the right
subtract the number
divide both sides by 2
Answer: 12.5 or 12 1/2
Step-by-step explanation:
Answer:
$1.10
Step-by-step explanation:
We have been that Alex went to the grocery store and bought 5 avocados. He paid $10 and received $4.50 in change.
First of all, we will find amount paid for 5 avocados by subtracting $4.50 from $10.
![\text{Amount paid for 5 avocados}=\$10-\$4.50](https://tex.z-dn.net/?f=%5Ctext%7BAmount%20paid%20for%205%20avocados%7D%3D%5C%2410-%5C%244.50)
![\text{Amount paid for 5 avocados}=\$5.50](https://tex.z-dn.net/?f=%5Ctext%7BAmount%20paid%20for%205%20avocados%7D%3D%5C%245.50)
Now, we will divide $5.50 by 5 to find cost of each avocado.
![\text{Cost of each avocado}=\frac{\$5.50}{5}](https://tex.z-dn.net/?f=%5Ctext%7BCost%20of%20each%20avocado%7D%3D%5Cfrac%7B%5C%245.50%7D%7B5%7D)
![\text{Cost of each avocado}=\$1.10](https://tex.z-dn.net/?f=%5Ctext%7BCost%20of%20each%20avocado%7D%3D%5C%241.10)
Therefore, the cost of each avocado is $1.10.