asked 171k views
1 vote
A box is 26 by 15 by 20 cm all measured to the nearest cm. Disc cases are 1.6 by 14.2 by 19.3 cm all measured to the nearest mm. if the cases are stacked as shown show that is may NOT be possible for 16 cases to fit in the box

A box is 26 by 15 by 20 cm all measured to the nearest cm. Disc cases are 1.6 by 14.2 by-example-1
asked
User Flack
by
7.9k points

1 Answer

3 votes

Answer:

16×max case < min box

Explanation:

You want to show that 16 cases 1.6 cm thick might not fit in a box 26 cm long if the case dimension is rounded to the nearest mm, and the box dimension is rounded to the nearest cm.

Maximum case

The largest the case can be and have its dimension rounded to 1.6 cm is ...

1.6 cm + 0.04999... cm = 1.64999... cm ≈ 1.65 cm

Then 16 of them will have a maximum thickness of ...

16 × 1.65 cm = 26.4 cm

Minimum box

The smallest the box can be and have its dimension rounded to 26 cm is ...

26 cm - 0.5 cm = 25.5 cm

Difference

The difference between the minimum box length and the maximum length of 16 cases is ...

25.5 cm -26.4 cm = -0.9 cm

The box could be as much as 0.9 cm too short to hold 16 disc cases.

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Additional comment

Whether this is a problem or not depends on the distribution of box and case sizes, and their correlation within a batch of cases.

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answered
User Friendly Crook
by
7.7k points
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