Answer:
Brian sold 35 tickets
Step-by-step explanation:
42/6 = 7
7 x 5 = 35
35/42 = 5/6
Brian sold 35 tickets
(I know this isn't part of the question, but Brain didn't sell 7 tickets)
If the average of x and y is 11 and the average of x, y and z is 5, then the value of z is -7
Given,
The average of x and y = 11
We know average = Sum of the terms / Number of terms
Then, the equation will become

x+y =11×2
x+y =22
Average of x, y and z = 5

x+y+z = 5×3
x+y+z =15
Substitute the value of x+y
22+z=15
z =15-22
x = -7
Hence, If the average of x and y is 11 and the average of x, y and z is 5, then the value of z is -7
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that is, hypotenuse.
Therefore, let the length of the hypotenuse be 'x.'

625+3600=

4225=

Therefore,

=x
65=x
The length of the hypotenuse is B.65 centimetres.
A) Sale value = 48
Profit on the total cost = 20% = 0.20
=> Total cost + 0.20 total cost = Sale value
=> 1.20 total cost = 48
=> total cost = 48 / 1.20
=> total cost = 40
B) Cost of the gloves = 4
=> Cost of the skirt = total cost - cost of the gloves
=> Cost of the skirt = 40 - 4 = 36
C) Price of the skirt = total value - price of the gloves
Total value = 48
Price of the gloves = cost of the gloves + margin
margin of the gloves = 100% on the cost = cost
Price of the gloves = cost of the gloves * 2
Price of the gloves = 4 * 2 = 8
=> Price of the skirt = 48 - 8 = 40
D) Profit on the skirt = price of the skirt / cost of the skirt = 40 / 36 = 1.1111
Profit % = 11,11 %