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John used 1 3/4 kg of salt to melt on his sidewalk. He then used another 3 4/5 kg on the driveway. If he originally bought 10 kg of salt, how much does he have left

Sagot :

Answer:

he have left 4.45 kg

Step-by-step explanation:

The computation of he have left is as follows:

= Total salt purchase - salt used on his sidewalk - sales used on the driveway

[tex]= 10 - 1 \frac{3}{4} - 3 \frac{4}{5}\\\\= 10 - \frac{7}{4} - \frac{19}{5}\\\\= \frac{200 - 35 -76 }{20} \\\\= \frac{89}{20}[/tex]

= 4.45 kg

Hence, he have left 4.45 kg

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