2 oranges, 3 bananas and 4 apples cost Rs.15. 3 oranges, 2 bananas, and 1 apple costs Rs 10. What is the cost of 3 oranges, 3 bananas and 3 apples?
(a) Rs10 (b) Rs15 (c) Rs20 (d) Rs25

• 1st equation:
  2x+3y+4z=15
  2nd equation:
  3x+2y+z=10
  adding 1 and 2 eqn:
  5x+5y+5z=25
  x+y+z=5
  3x+3y+3z=3*5=15
  so ans is 15
• 14 years agoHelpfull: Yes(21) No(1)
• Take orange, banana and apple costs are x,y and z respectively.
  According to the problem, 2x+y+4z=15---->(1)and x+2y+z=10---->(2).
  adding (1)&(2),
  5x+5y+5z=25==>x+y+z=25/5=5.
  Therefore, 3x+3y+3z=3(x+y+z)=3*5=15
• 14 years agoHelpfull: Yes(5) No(1)
• 2+3+4=9
  15/9=1.6
  similarly
  3+2+1=6
  10/6=1.6
  so
  9*1.6=14.4===15
• 14 years agoHelpfull: Yes(2) No(3)