A seller sold 3/4th of his goods at 24% profit and the remaining part at cost price. Accordingly, what was his total profit percentage?

Given: A seller sold 3/4th of his goods at 24% profit and the remaining part at cost price.

Selling price of 3/4th of the goods:

Cost price of this portion

= (3/4) × 100

= ₹75

Selling price at 24% profit: 75 + (24% of 75)

= 75 + (75 × 24/100)

= 75 + 18

= ₹93

Selling price of 1/4th of the goods:

Cost price of this portion

= (1/4) × 100

= ₹25

Since it is sold at cost price, the selling price = ₹25.

Total Selling Price

= 93 + 25

=118

Total Profit = Total Selling Price - Total Cost Price

= 118 – 100

= ₹18

Profit Percentage = $$\frac {Profit} {Total Cost Price}$$ $$\times$$ 100

= $$\frac {18} {100}$$ $$\times$$ 100

= 18

Thus, correct option is (a).