eduardo22 eduardo22

15-01-2015
Mathematics

Answered

A kilogram of whole-wheat flour costs $6. What is the cost of 400 grams of flower
1 kg=1000 grams

Answer :

18-01-2015

[tex]1 \ kg=1000 \ g \ - \ \$6 \\ 400 \ g \ - \ x \\ \\ \frac{1000}{6}=\frac{400}{x} \\ 1000x=400 \times 6 \\ 1000x=2400 \\ x=\frac{2400}{1000} \\ x=2.4[/tex]

400 grams of flour cost $2.4.

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