The present age ratio of Ashok to Pradeep is 4 : 3. Ashok will be 26 years old after 6 years. How old is Pradeep now?

Introduction / Context:
Use the ratio to express present ages in terms of a multiplier, then connect with the given future age to compute the multiplier and hence the other person's age.

Given Data / Assumptions:

• Ashok : Pradeep = 4 : 3 ⇒ Ashok = 4k, Pradeep = 3k
• Ashok after 6 years = 26 ⇒ current Ashok = 20

Concept / Approach:
Set 4k = 20 ⇒ k = 5, then compute Pradeep = 3k.

Step-by-Step Solution:

Verification / Alternative check:
Ashok 20 now; ratio 20 : 15 = 4 : 3, and Ashok in 6 years = 26, consistent.

Why Other Options Are Wrong:
12, 19.5, 21 do not preserve 4 : 3 when Ashok is 20 now.

Common Pitfalls:
Using 26 directly in the ratio without subtracting 6 years to get the present age.

Final Answer:
15 years.