In what ratio should sugar costing Rs. 40 per kg be mixed with sugar costing Rs. 48 per kg , so as to earn a profit of 20% by selling the mixture at Rs. 54 per kg?
A2 ∶ 3
B4 ∶ 7
C3 ∶ 5
D5 ∶ 8
Answer:
C. 3 ∶ 5
Read Explanation:
Solution:
Given -
Sugar costing Rs. 40 per kg be mixed with sugar costing Rs. 48 per kg
Profit = 20%, selling price = Rs. 54
Formula used -
Selling price = (100 + profit) × cost price/100
Solution -
Let the cost price of whole mixture be Rs. x.
⇒ x = 54 × 100/120
⇒ x = Rs. 45
Ratio = (48 – 45) ∶ (45 – 40)
⇒ 3 ∶ 5
∴ The ratio is 3 : 5.