Subject: General Aptitude · Chapter: Profit and Loss · Exam: · Marks: · Difficulty:
A trader mixes three varieties of groundnuts costing ₹ 50, ₹ 20 and ₹ 30 per kg in the ratio 2 : 4 : 3 in terms of weight, and sells the mixture at ₹ 33 per kg. What percentage of profit does he make?
(a)8\%
(b)9\%
(c)10\%
(d)None of these
Answer
Answer (as printed): C
Explanation
Suppose he bought 2 kg, 4 kg and 3 kg of the three varieties respectively. C.P. of $9 \mathrm{kg}=₹(2 \times 50+4 \times 20+3 \times 30)=₹ 270$. S.P. of $9 \mathrm{kg}=₹(9 \times 33)=₹ 297$. $$\text { ∴ Profit } \%=\left(\frac{27}{270} \times 100\right) \%=10 \% .$$