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If the difference between discount of 50% and two successive discounts of 30% on a certain bill is Rs. 6, then what is the amount (in Rs.) of the bill?
  • a)
    300
  • b)
    750
  • c)
    600
  • d)
    800
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
If the difference between discount of 50% and two successive discounts...
Let, amount of the bill = Rs. x
In the 1st case,
After a discount of 50%, price = x - x × 50/100 = Rs. 0.5x
In the 2nd case,
After discount of 30%, price = x - x × 30/100 = Rs. 0.7x
After another discount of 30%, price = 0.7x - 0.7x × 30/100 = Rs. 0.49x
According to problem,
⇒ 0.5x - 0.49x = 6
⇒ 0.01x = 6
⇒ x = 600
∴ amount of the bill = Rs. 600
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If the difference between discount of 50% and two successive discounts of 30% on a certain bill is Rs. 6, then what is the amount (in Rs.) of the bill?a)300b)750c)600d)800Correct answer is option 'C'. Can you explain this answer?
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