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
Answer:
33.33%
Step-by-step explanation:
Given that,
The selling price of gloves and the skirt = £ 42
Profit on the total cost = 40% = 0.40
so,
Total cost + profit = sale value
⇒ 1.40 total cost = 42
∵ Total cost = 42/1.40
= £ 30
Cost of the gloves = £ 3
Cost of the skirt = Total cost - cost of gloves
∵ Cost of the skirt = £ 30 - £ 3
= £ 27
Value of the skirt = Total value - Value of gloves
As we know,
Total value = £42
Value of gloves = Cost of the gloves + profit
A.T.Q.
Profit on the gloves = 100 % of cost = Cost
∵ Value of gloves = 2 * cost of the gloves'
= 2 * £3
= £6
∵ Value of the skirt = £42 - £6
= £ 36
Therefore,
Profit on the skirt = Value of the skirt - cost of the skirt
= £ 36 - £ 27
= £ 9
∵ Profit % on skirt = profit/C.P. * 100
= £9/27 * 100
= 33.33 %
Answer:
Step-by-step explanation:
<u>We know that:</u>
- Area of shaded region = Area of square - Area of circles
- Radius of circle = 3 in
- Area of circle = πr²
- Area of square = s²
<u>Solution:</u>
- Area of shaded region = Area of square - Area of circles
- => Area of shaded region = (12²) - 4(22/7 x 3 x 3)
- => Area of shaded region = (144) - 4(22/7 x 9)
- => Area of shaded region = (144) - 4(198/7)
- => Area of shaded region = 144 - 792/7
- => Area of shaded region = 144 x 7/7 - 792/7
- => Area of shaded region = 1008/7 - 792/7
- => Area of shaded region = 1008/7 - 792/7
- => Area of shaded region = 216/7 in²
Answer: b or Rebecca's answer
Step-by-step explanation: brainlest please
Answer:
the answer is c
Step-by-step explanation:
cause math