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1. A person buys some pens and pencils. The pen costs Tk.7 ech and pencil costs Tk.3 each. If he spends exactly Tk.81 and buys the maximum numbers of pen possible under these conditions, what is the ratio of pen to pencil?
- A. 3 : 2
- B. 3 : 2
- C. 3 : 2
- D. 3 : 2
Answer: Option A
Explanation:
The cost maximum no. pens = 9x7 = Tk. 63
So, the costs of pencils = Tk. (81 - 63) = Tk. 18
The no. of pencils = 18/3 = 6
So, the ratio of the no. of pens & pencils = 9:6 = 3:2
So, the costs of pencils = Tk. (81 - 63) = Tk. 18
The no. of pencils = 18/3 = 6
So, the ratio of the no. of pens & pencils = 9:6 = 3:2
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