Q 7. Three years ago a friend offered me a used typewriter for Rs. 1024. A year later he offered me the same for Rs. 640 and last year he wanted Rs. 400 and now he is willing to sell it to me for Rs. 250. But I have decided to buy it when he reduces the price next time, If he is constantly reducing its price, at what price will he offer the typewriter to me next?

A. Rs.150.45

B. Rs. 156.25

C. Rs. 211.25

D. Rs. 206.75

• He offers discount at a consistent rate. So, let see the last offer - 250 against 400. 250 is 62.5% of 400. Thus, next price would be :
  
  => (62.5 / 100) * 250
  
  Solve and you get answer is B. 156.25
• 10 years agoHelpfull: Yes(14) No(2)
• B.Rs 156.25
  Present Worth = x/(1+R/100)^n
  640=1024/(1+R/100)
  R=60%
  after 1 year value= 250/(1+60/100)=156.25
• 10 years agoHelpfull: Yes(11) No(3)
• 1024-640=384
  now x% of 1024 = 384
  there fore x= 37.5 %
  now as we see the price is decreasing by 37.5%
  now last price is 250
  37.5% of 250= 93.7
  there for 250-93.7 = 156.3 ie our option B
• 10 years agoHelpfull: Yes(9) No(1)
• ans is 156.25
  
• 8 years agoHelpfull: Yes(0) No(0)