There r 180 coins totally comprising of 10p and 25p coins. contributing to 36.90 rs. Find the number of 10p coins?

• If there are x coins of 10 paisa, then
  
  10x + 25*(180-x) = 3690
  -15x + 4500 = 3690
  x= 810/15 = 54
  
  so 54 coins of 10 paisa are there.
• 12 years agoHelpfull: Yes(17) No(2)
• Let The No. of 10p coins be x and 25p coins be y
  Hence, the equation is:
  x+y=180---------(1)
  10x+25y=3690------(2)
  Solving, we get x=54(10p coins) and 126(25p coins)
  Solving we get x=
• 12 years agoHelpfull: Yes(6) No(2)
• let 10 p coins be x and 25 p coins be y
  
  then according to ques
  10x + 25y = 3690 (1)
  x + y = 180 (2)
  
  solving these 2 ques we get
  x=54
  y=126
  
  so ans is 54
• 9 years agoHelpfull: Yes(0) No(1)