Correct Answer: Option C
Let the number of 25 p, 10 p and 5 p coins be x, 2x, 3x respectively.
Then, sum of their values
= Tk. {(25x/100) + (10 x 2x)/100 + (5 x 3x)/100}
= Tk. (60x/100)
So, 60x/100 = 30
=> x = (30 x 100)/60 = 50.
Hence, the number of 5 p coins = (3 x 50) = 150.
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