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  1. Two successive discounts of 70% and 30% are equivalent to a single discount of
    1. 75%
    2. 79%
    3. 100%
    4. 89%
Correct Option: B

Single equivalent discount = 70 + 30 −
70 × 30
%
100

Single equivalent discount = (100 – 21)% = 79%
2nd Method
After a discount of 70%, remaining price is just 30. On this 30%, another discount of 30% is given which will be equal to 9 so, total discount = 70% + 9% =79%.



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