A toy weighing 24 grams of an alloy of two metals is worth Rs. 174, but if the
weights of metals in alloy be interchanged, the toy would be worth Rs. 162. if the price of one metal be Rs 8 per gram, find the price of the other metal used to make the toy

• let the two metals be x and y gms. the cost of x is rs 8 per gram and the cost of y is rs 'z' per gram.
  x + y=24
  8x + zy =174
  zx + 8y =162
  so y=(24-x)
  subtituting the value of y in the last two equations we get z=6
  hence price is 6, ans is 6
• 11 years agoHelpfull: Yes(26) No(8)
• Rs 6 per gm.
  
  If x gm of one metal of price Rs 8 per gm is used and price of other metal is Rs y per gm, then
  8x+24y-xy=174
  -8x+192+xy = 162
  adding these two eqns, we get
  24y=144
  y= Rs 6 per gm.
  
• 11 years agoHelpfull: Yes(10) No(10)