A person who has a certain amount with him goes to market. He can buy 50 oranges or 40 mangoes. Heretains 10% of the amount for taxi fares and buys 20 mangoes and of the balance he purchasesoranges. Number of oranges he can purchase is

• let total amount of money be x
  cost of 1 orange=x/50
  cost of 1 mango=x/40
  now spend amount=x/10+20*x/40=6x/10=3x/5
  amount left=x-3x/5=2x/5
  number of oranges=2x/5*50/x=20
• 9 years agoHelpfull: Yes(2) No(2)
• For example let us take that person had 100 rupees .
  For 100 rs he can buy =50 oranges (or) 40 mangos
  40 mangos cost = 100 rs
  1 mango cost is = 100/40 = 2.5 rupees each mango.
  1 orange cost is = 100/50 = 2 rs each.
  He given in ques he buy 20 mangos so =20*2.5= 50 rs
  He kept 10 % of 100 for taxi fare = 10 rs
  So left amount is 40 rs . So for 40 rs he buy 20 oranges... That solve....
• 5 years agoHelpfull: Yes(0) No(0)