A computer chip 0.32 cm thick is made up of layers of silicon. If the top and bottom layers are each 0.03 cm thick and the inner layers are each 0.02 cm thick, how many inner layers are there?
A. 13
B. 15
C. 16
D. 52
E. 64
(.32 - 2*.03)/.02
0.26 / 0.02 = 13
A. 13
0.32-2*0.03
---------------- = 13
0.02
A. 13
a.13
To determine the number of inner layers in the computer chip, we need to subtract the thickness of the top and bottom layers from the total thickness of the chip. Then, we divide the remaining thickness by the thickness of each inner layer.
1. Start by subtracting the thickness of the top and bottom layers from the total chip thickness: 0.32 cm - 0.03 cm - 0.03 cm = 0.26 cm.
2. Next, divide the remaining thickness by the thickness of each inner layer: 0.26 cm ÷ 0.02 cm = 13.
Therefore, there are 13 inner layers in the computer chip.
The correct answer is A. 13.