**Answer:** Option **
D **

**Explanation:**

**Apporach I:**
Let the X kg of sugar costing ₹ 20 kg and Y kg of sugar costing ₹ 15 kg are mixed.

According to the question,

CP = SP {In case of no profit, no loss]

20X + 15Y = 16(X + Y)

⇒ 20X + 15Y = 16X + 16Y

⇒ 20X – 16x = 16Y – 15Y

⇒ 14X = Y

**Approach II:**
By the rule of alligation,

**∴** Reqd ratio = 1 : 4