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1. An instrument store gives a 10% discount to all students of the original cost of an instrument. During a school sale an additional 15% is taken off the discounted price. Rahim, a student at the local high school, purchases a flute for Tk 306. How much did it originally cost?
- A. Tk 400
- B. Tk 400
- C. Tk 400
- D. Tk 400
Answer: Option A
Explanation:
Total discount= -10-15+(10×15)/100=|-23.5%|=23.5%
So, current price in percentage=100-23.5%=76.5%
Here,
76.5% is equal to 306 taka
So, 100% is equal to (306×100)/76.5= 400 taka
(ans)
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