If the weight of 6 sheets of paper be 45 grams,how many sheets of the same paper would weight 1`(1)/(2)` kilograms

If the weight of 12 sheets of thick paper is 40 grams, how many sheets of the same paper would weigh 2(1)/2 kilograms?

If the weight of 12 sheets of thick paper is 40 grams,how many sheets of the same paper would weigh (2)(1)/(2) kilograms?

If the weight of 12 sheets of thick paper is 40 grams, how many sheets of the same paper would weigh (2) 1/2 kilograms ?

If the weight of 12 sheets of thick paper is 40 grams, how many sheets of the same paper would weigh 16 2/3 kilograms?

If the weight of 18 sheets of paper is 50 g, how many sheets of the same paper will weight 3(3)/(4) kg?.

If the weight of 18 sheets of paper is 50 g, how many sheets of the same paper will weight 3(3)/(4) kg?

If the weight of 10 sheets of thick paper is 40 grams,How many sheets of the same paper would weight 800 grams?