A shop owner sells 90 oranges and gains SP of 20 oranges. Find the gain %?
Choose the correct choice:
A) 25 4/7%
B) 27 4/7%
C) 30 4/7%
D) 29 4/7%
E) 28 4/7%
Gain=20 oranges
Total 90 oranges
CP 90-20= 
<gadget id="calculator">90-20</gadget>
<output>70</output>
70
(20/70)*100=28 4/7%
Ans 28 4/7%
<result>E</result>
A shop owner sells 90 oranges and gains SP of 20 oranges. Find the gain %?