Step One
Find the cost of one bottle
12 bottles cost 9.25 pounds.
1 bottle costs x
12 / 1 = 9.25/x Cross multiply
12*x = 1 * 9.25 Divide by 12
x = 9.25 / 12
x = 0.77
Remark
0.77 pounds sterling = 77 pennies
Step Two
find the profit on the sale of one bottle
100 - 77 = 23 pennies
Step Three
Find the % profit on one bottle.
% Profit = (profit on one bottle / Cost of 1 bottle.) * 100%
% Profit = (23 / 77) * 100
% Profit = 29.87% <<<<<<<< Answer.
Answer:
See Explanation
Step-by-step explanation:
The question is incomplete as the number line is not attached.
<em>However, the following will guide you through</em>
Given

Required
Determine BC
First, we need to get the fraction of BC using the following

Substitute
for AB

Make BC the subject of formula

Take LCM



This implies that you multiply the length of AC by 2/3 to get BC
<em>Take for instance, AC = 24</em>
<em>BC will be:</em>
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<em>Or if AC = 12</em>
<em>BC will be:</em>
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<em>Or if AC = 36</em>
<em>BC will be:</em>
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I'm pretty sure it would be 95.40. Because 90 x 6%= 5.40 add that to 90