The difference of two numbers equals 60% of the smaller number. What is the ratio of the bigger number to the smaller number?
A. 5:3
B. 7:4
C. 8:5
D. 9:7
E. none of these
Explanation: ধরে নিলাম, বড় number টি হচ্ছে \(x\) আর ছোট number টি হচ্ছে \(y\)। বলা আছে , \(x-y=0.6y \Rightarrow x=1.6y \Rightarrow x/y=1.6:1 = 16:10 = 8:5\)।
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