A single discount equivalent to the discount series of 20%, 10% and 5% is?
Choose the correct option:
A) 20
B) 99
C) 7878
D) 656
E) 27
SP2 = 2/3 SP1   CP = 100   SP2 = 80   2/3 SP1 = 80   SP1 = 120   100 --- 20 =&gt; 20% 20nswer: 20
<result>A</result>
A single discount equivalent to the discount series of 20%, 10% and 5% is?