3 years ago

Washing powder cost 12.87 for 9 kg. hwo much does 1 kg cost to the nearst cent

Mathematics

2 answers:

Goryan [66]3 years ago

5 0

Answer:

hard

Step-by-step explanation:

I don't know because I have never learnt these things

Sav [38]3 years ago

4 0

Answer:

$1.43$

Step-by-step explanation:

9kg -------> 12.87

1kg ---------> x

let the unknown number be x

$9 = 12.87 \\ 1 = x \\ use \: \: cross \: \: multipication \\ 9x = 12.87 \\ \frac{9x}{9} = \frac{12.87}{9} \\ x = 1.43$

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