Question

successive discounts of 10%,20%,and 20% are equal to a single discount of: ​

Answer 1

10% + 20% + 20% = 50

= 50 %

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Answer 2

Single equivalent discount for successive discounts of 10% and 20%.

10+20-(10×20/100)%=28%

Single equivalent discount for 28% and 20%.

28+20-(20×28/100)% =42.4%

hope this helps you