Howard has three times as much money as Ronald. If Howard gives Ronald 50TK. Ronald will then have three times as much money as Howard. How much money do the two of them have together?

A 75 TK.

B 100 TK.

C 125 TK.

D 150 TK.

Solution

Correct Answer: Option B

ধরি, Ronald এর আছে R টাকা 
Howard এর আছে 3R টাকা 
Howard, Ronald কে 50 টাকা দিয়ে দিলে 
 Howard এর টাকা হয় = (3R - 50) টাকা 
Ronald এর টাকা হয় = (R + 50) টাকা
তখন, 3(3R - 50) = (R + 50)
       ⇒ 3(3R) - 150 = (R + 50)
      ⇒  9R - R = 200
      ⇒  8R = 200
        ∴ R = 25 
∴ Ronald এর আছে 25 টাকা 
∴ Howard এর আছে (3 × 25) = 75 টাকা 
∴ তাদের আছে = (25 + 75) = 100 টাকা 

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