Fresh grapes contain 80% water and dry grapes contain 10% water.What is the weight of dry grapes that can be obtained from 40 kgs of fresh grapes?

1) 9.5
2) 7.2
3) 10
4) 8.8

• Quantity of grape present in 40 kg of fresh grape = 8 kg
  now 90% of dry grape = 8 kg( obtained above)
  therefore 100% of dry grape = 8*(100/90) ( simple unitary method)
  = 8.8 kg (ans)
  my choice is 4
• 11 years agoHelpfull: Yes(5) No(1)
• in 40 kg grapes,water is 80% nd grapes is 20%,so
  fresh grapes=20% of 40=8 kg
  fresh grapes =dry grapes in which 10% water so 90% dry grapes,
  there dry grapes=90% 0f 8=7.2 kg ans
  
• 11 years agoHelpfull: Yes(3) No(4)
• solid grape in 40kg fresh grapes=40*20%=8kg
  dry grape in fresh grape=8*0.90=7.2 kg
• 8 years agoHelpfull: Yes(1) No(0)