A bakery opened yesterday with its daily supply of 40 dozen rolls. Half of the rolls were sold by noon and 80 % of the remaining rolls were sold between noon and closing time. How many dozen rolls had not been sold when the bakery closed yesterday?

• A bakery opened yesterday with its daily supply of 40 dozen rolls.
  Half of the rolls (20 dozen ) were sold by noon and 80 % of the remaining rolls(0.8*20=16 dozen) were sold between noon and closing time.
  
  unsold rolls = 20-16= 4 rolls
• 12 years agoHelpfull: Yes(15) No(0)
• 1dozen=12,so 40dozen=40*12=480
  half(1/2) of the rolls were sold by noon=480/2=240.
  80%of remaining rolls were sold between noon and closing time=240*80/100=192
  so 240-192=48
  number of roll is 48 and then convert to dozen=48/12=4
  so answer is 4
• 12 years agoHelpfull: Yes(8) No(0)
• ans 4
  daily..... 40 dozen roll were sold
  20 dozen were sold before noon,then remaining are 20
  in that 80% is 16 were sold before closing
  then remaining were 4
• 12 years agoHelpfull: Yes(4) No(2)
• total roll=40*12=480
  at noon sold is=240
  at evinning 240*80/100=192
  remain=240-192=48
  so no of dozen is 48/12=4
• 12 years agoHelpfull: Yes(2) No(0)
• intially 40 dozen rolls ==> 40 * 12 ==> 480 rolls.
  half of the rolls were sold by noon ==> 480 / 2 ==> 240 rolls were sold.
  so, remaining rolls ==> 480 - 240 sold rolls ==> 240 rolls were remaining.
  80% of remaining rolls were sold noon & closing time ==> 80% of 240
  ==> 80/100 * 240
  ==> 24 * 8
  ==> 192 rolls.
  That is, 192 rolls from 240 rolls were sold ==> 240 - 192 ==> 48 rolls OR 4 Dozen rolls had not been sold when the bakery closed yesterday.
  
  Hope this answer help you....
• 4 years agoHelpfull: Yes(1) No(0)
• 1 dozen=12
  40 dozen= 40*12=480
  half dozen(20)=20*12=240
  80%of 240(remaining)=240/100*80=192
  240-192=48
  48/12=4
• 5 years agoHelpfull: Yes(0) No(0)
• Out of 40 20 were left
  Then after 80% of 20 means 4
  Answer is 4
• 4 years agoHelpfull: Yes(0) No(0)