A single discount equivalent to discount series 20% , 20% and 10% is = ?
A. 50%
B. 48.4%
C. 42.4%
D. 40.4%
Answer: Option C
Solution (By Examveda Team)
Single equivalent discount for 20% and 20%$$\eqalign{ & = 20 + 20 - \frac{{20 \times 20}}{{100}} \cr & = 40 - 4 \cr & = 36\% \cr} $$
Single equivalent discount for 36% and 10%
$$\eqalign{ & = 36 + 10 - \frac{{36 \times 10}}{{100}} \cr & = 46 - 3.6 \cr & = 42.4\% \cr} $$
This Question Belongs to Arithmetic Ability >> True Discount
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