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?
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Answer:
- 1500/5=x/12
- 1500×12=x×5
- x=1500×12/5
- x=300×12
- x=3600
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