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Andreyy89
2 years ago
14

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

Mathematics
2 answers:
Goryan [66]2 years ago
5 0

Answer:

hard

Step-by-step explanation:

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

Sav [38]2 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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