১৯৯৯ সালে, ডায়ানা ১০টি ইংরেজি বই এবং ৭টি ফরাসি বই পড়েছিলেন। ২০০০ সালে তিনি ইংরেজি বইয়ের চেয়ে দ্বিগুণ ফরাসি বই পড়েন। দুই বছরে তিনি যে বইগুলো পড়েছিলেন তার ৬০% যদি ফরাসি হয়, তাহলে ২০০০ সালে তিনি কতগুলো বই পড়েছিলেন?
A. ৪০
B. ৪৫
C. ৪৮
D. ৪৬
সঠিক উত্তরঃ
B.
৪৫
Explanation:
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