A tradesman gives 4% discount on the marked price and gives 1 article ...
Explanation:
Let's assume the cost price of each article is x.
Discount and Free Articles:
1) The tradesman gives a 4% discount on the marked price. This means the selling price of each article is 96% of the marked price.
Selling price = (100 - discount %) * marked price
= 96/100 * marked price
= 0.96 * marked price
2) The tradesman gives 1 article free for every 15 articles purchased. This means the effective selling price is reduced for each article.
Let's assume the customer buys n articles.
Number of free articles = n/15
Total selling price = (n + n/15) * 0.96 * marked price
= (16n/15) * 0.96 * marked price
= (16/15) * 0.96 * marked price * n
Profit Calculation:
According to the question, the tradesman gains 35% profit.
Profit = Selling Price - Cost Price
= (16/15) * 0.96 * marked price * n - x * n
It is given that the tradesman gains 35% profit, so
Profit = 0.35 * Cost Price
= 0.35 * x * n
Equating the profit expressions:
(16/15) * 0.96 * marked price * n - x * n = 0.35 * x * n
Simplifying the equation:
(16/15) * 0.96 * marked price - x = 0.35 * x
(16/15) * 0.96 * marked price = 1.35 * x
Calculating the Increase in Marked Price:
The marked price is increased above the cost price.
Let the increase in marked price be p.
New marked price = x + p
Using the equation (16/15) * 0.96 * marked price = 1.35 * x, we can substitute the new marked price:
(16/15) * 0.96 * (x + p) = 1.35 * x
Simplifying the equation:
(16/15) * 0.96 * x + (16/15) * 0.96 * p = 1.35 * x
(16/15) * 0.96 * p = 1.35 * x - (16/15) * 0.96 * x
(16/15) * 0.96 * p = (1.35 - (16/15) * 0.96) * x
p = ((1.35 - (16/15) * 0.96) * x) / ((16/15) * 0.96)
Calculating the Percentage Increase:
The percentage increase in marked price can be calculated as:
Percentage increase = (p / x) * 100
Substituting the value of p, we get:
Percentage increase = (((1.35 - (16/15) * 0.96) * x) / ((16/15) * 0.96)) * 100
Simplifying the expression:
Percentage increase = ((1.35 - (16/15) * 0.96) / ((16/15) * 0