Question

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

Answer 1

he have left 4.45 kg

Explanation:

The computation of he have left is as follows:

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

`= 10 - 1 (3)/(4) - 3 (4)/(5)\\\\= 10 - (7)/(4) - (19)/(5)\\\\= (200 - 35 -76 )/(20) \\\\= (89)/(20)`

= 4.45 kg

Hence, he have left 4.45 kg