Q. If the cost of 28 pen is 420. Then what is the cost of 20 pens?

• Rs 300
  Cost of 20 pens=420*20/28=300 Rs
• 11 years agoHelpfull: Yes(2) No(0)
• 28x=420
  x=420/28=15
  Therefore one pen's cost is 15rs.
  Hence 20 pen's cost is 300
• 11 years agoHelpfull: Yes(1) No(0)
• cost of 28 pens=420
  cost of one pen =420/28=15
  so cost of 20 pens=20*15=300
• 11 years agoHelpfull: Yes(0) No(0)
• 300. cost of 28 pen is 420.. divide both side of equation by 7
  this means cost of 4 pens is 60... multiply both sides by 5.. cost of 20 pens is 300
• 11 years agoHelpfull: Yes(0) No(0)
• 28 pen=420;
  cost of 1 pen is = 420/28=15rs
  
  cost of 20 pen is= 20*15=300;
  
  answer is 300rs.
• 11 years agoHelpfull: Yes(0) No(0)
• one pen value is 420/28=15.the 20 pens cost are 15*20=300
  ans will be 300
• 11 years agoHelpfull: Yes(0) No(0)
• 420/28=x x=15 20*15=300
• 11 years agoHelpfull: Yes(0) No(0)
• Cost of 28 pens=420
  cost of 1pen= 420/28 = 15
  cost of 20 pens= 20*15=300
  so the ans is 300
• 11 years agoHelpfull: Yes(0) No(0)
• (420/28)*20
• 11 years agoHelpfull: Yes(0) No(0)
• It will cost 300.
  one pen cost: 420/28=15 so,20 pen cost:15x20=300.
• 11 years agoHelpfull: Yes(0) No(0)
• 300.
  420*20/28
• 11 years agoHelpfull: Yes(0) No(0)
• cost of 28 pen is=420.
  cost of 1 pen=420/28.
  then cost of 20 pens=420*20/28.
  300.
  therefore cost of 20 pen's=300rs.
• 11 years agoHelpfull: Yes(0) No(0)