Question

A suitcase weighs 13kg to the nearest kilogram. Another suitcase weighs 15 kg to the nearest kilogram. Work out the smallest amount, in kilograms (kg), that the two suitcases could weigh in total.​

Answer 1

27 kg

Explanation:

You want the smallest possible sum of 13 kg and 15 kg, if both weights were rounded to the nearest kg.

Minimum

The minimum each value could be is 0.5 kg less than the rounded value:

12.5 kg and 14.5 kg

The sum of these minimum values is the minimum weight the two suitcases could possibly have:

12.5 kg + 14.5 kg = 27 kg

The total weight will be a minimum of 27 kg.

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