The average price of three items of furniture is Rs. 15000. If their prices are in the ratio 3 : 5 : 7, the price of the cheapest item is :

a. Rs. 9000
b. Rs. 15000
c. Rs. 18000
d. Rs. 21000

• option a)Rs 9000
  three items. hence sum =3(15000)=45000
  sum up ratios:3x+5x+7x=45000
  x=3000
  cheapest item=3(3000)=9000
• 12 years agoHelpfull: Yes(2) No(0)
• let the price of the three items be 3x,5x and 7x
  (3x+5x+7x)/3=15000
  15x/3=15000
  15x=45000
  x=45000/15
  x= rs 3000
  
  price of the cheapest item = 3*3000= rs 9000
• 10 years agoHelpfull: Yes(2) No(0)
• let x be the factor by which the three prices are divided. Therefore prices are 3(x),5(x),7(x).
  3(x)+5(x)+7(x)/3=15000.
  from above equation we get x=50000
  lowest price will be 3(x)=3x5000
  ans=15000
• 7 years agoHelpfull: Yes(0) No(1)
• a)9000
  (a+b+c)/3=15000;a+b+c=45000
  a=(3/15)*45000,b=(5/15)*45000,c=(7/15)*45000
• 7 years agoHelpfull: Yes(0) No(0)
• it's 9000 ..directly do (15000*3)/15
• 4 years agoHelpfull: Yes(0) No(0)