2 rice varieties costing Rs 25 per kg and Rs 35 per kg were mixed as 2 : 3 and sold so as to gain 20%. What was the SP of the mixture (Rs/kg)?
option
(1) 37.2
(2) 28.6
(3) 30
(4) 32
(5) 40.5

• let, total weight of mixture be 1 kg
  so, quantity of first variety 2/5 kg
  quantity of second variety 3/5 kg
  total c.p = 25*2/5 + 35*3/5= 31
  therefore, s.p in order to gain 20% = 120/100 * 31= 37.2
• 10 years agoHelpfull: Yes(2) No(0)
• c.p of (2+3=5)kg rice=rs(2*25+3*35)=rs 155.........
  so for 1 kg mix rice, c.p= rs 31
  
  with 20% gain s.p of 1 kg of mix rice= rs (31*120/100)= rs 37.2
• 10 years agoHelpfull: Yes(0) No(0)