Question

If the cost of a diamond varies directly with the square of its weight and if the weight of the
diamond is 5 grams, then the cost is Rs.1500. What will be the cost of 12 grams diamond?​

Answer 1

Answer:

Cost of diamond =k(weight)

2

8000=k(10)

2

k=

100

8000

=80

Diamond was broke into two pieces = 3x+2x=10,

5x=10⇒x=2

Ist part: 3x=6

IInd part: 2x=4

Ist part; cost⇒80×36=2880

IInd part; cost⇒80×16=1280

Total cost = 2880+1280=4160

So loss = 8000−4160=3840