ए नंबर 12 बाय फाइव टाइम्स अनदर नंबर इज द सम S7 फाइंड द नंबर
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Step-by-step explanation:
A positive number is 5 times another number. If 21 is added to both the numbers ,then one of the new number become the twice of new number. What is the number.
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