Ram is 4 times his son's age today. Five years hence, Ram will be thrice his son's age. Find their current ages? বর্তমানে রামের বয়স তার ছেলের বয়সের 4 গুণ। পাঁচ বছর পর রামের বয়স ছেলের বয়সের 5 গুন হবে। তাদের বর্তমান বয়স কত?

Let the present ages of the son and Ram be x and 4x. Five years hence, their ages will be x + 5 and 4x + 5, and the ratio will be 1:3. This gives the linear equation 3 multiplied by (x + 5) = 4x + 5. Solving this gives 3x + 15 = 4x + 5, so x = 10, meaning the son is 10 years old and Ram is 40 years old. The stated Bengali text says the ratio will be 5 times, which would make the son 10 and the father 40, leading to option B but conflicting with the English text; following the English text thrice, their current ages are 40 and 10.

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