Suppose 2 kg of sugar contains 9 × 106 crystals. How many sugar crystals are there in


(i) 5 kg of sugar?


(ii) 1.2 kg of sugar?


(i) Let x be the sugar crystals in 5kg of sugar


 


The above information in the form of table is as follows:


 



Sugar Weight



2 kg



5 kg



No. of crystals



9 × 106 



x



 


The above information are in direct proportion:


 


2/(9 × 106) = 5/x


 


→ x = 22.5 × 106 crystals


or x = 2.25 × 107 crystals 


 


 


 


(ii) Let x be the sugar crystals in 1.2kg of sugar


 


The above information in the form of table is as follows:


 



Sugar Weight



2 kg



1.2 kg



No. of crystals



9 × 106



x



 


The above information is in direct proportion:


 


Therefore,


 


2/(9 × 106) = 1.2/x


 


→ x = 5.4 × 10crystals

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