Oranges are bought at 7 for Rs.5. At what rate per hundred must they be sold to gain 33%?
Answers:  A) 57  B) 58  C) 69  D) 84  E) 95
7 oranges bought for rs 5   1 orange cost =5/7   therefore for 100 oranges =100*(5/7)   gain =33%    500/7+(33/100)*500/7= 
<gadget id="calculator"> 500/7+(33/100)*500/7</gadget>
<output>95</output>
rate per hundred he want to sell   ans :95   ANSW95R:95
<result>E</result>
Oranges are bought at 7 for Rs.5. At what rate per hundred must they be sold to gain 33%?