Question

At a warehouse that makes locks, the thickness of each key can be up to 0.25 mm off from the ideal thickness of 7.3 mm. If it is off more than that, the key won't fit in the lock. Find the maximum thickness the key can be and still fit.

a) 7.55 mm
b) 7.05 mm
c) 7.25 mm
d) 7.50 mm

Answer 1

The maximum thickness the key can be and still fit is 7.05 mm.

Step-by-step explanation:

To find the maximum thickness the key can be and still fit, we need to calculate the difference between the ideal thickness of 7.3 mm and the maximum allowable difference of 0.25 mm. To do this, we subtract 0.25 mm from 7.3 mm: 7.3 mm - 0.25 mm = 7.05 mm. Therefore, the maximum thickness the key can be and still fit is 7.05 mm.