The cost of a ticket increases by 10% to£18.15
Work out the original cost
2 answers:
Answer:
£16.50
Step-by-step explanation:
Let cost price be x
<em>Now, create a formula:</em>
x + 10x / 100 = 18.15
'or'
110x / 100 = 18.15
'or'
x = (18.15*100) / 110
x = 16.5
Let the original price = x
An increase of 10 % = 18.15
Multiply x by (1 + percent increase) which is 1.1x = 18.15
Now to find x divide both sides by 1.1:
X = 16.50
The original price was 16.50
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