Question

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Answer 1

48/36?

Answer 2

f Your fraction is backwards

Answer 3

Not really. To make the 3/4 kg into 1 kg you need to multiply 3/4 by 4/3. So do the same to find the solution:
\[\frac{9}{16}\times\frac{4}{3}=you\ can\ calculate\]

Answer 4

How did you find this out @kropot72 ?

Answer 5

I reasoned that, whatever fraction that I need to multiply 3/4 kg by to make it 1 kg, then that same fraction would be needed to multiply the fraction of the pail taken up by 3/4 kg to find the fraction of the pail taken up by 1 kg. So it is a proportionality question.