Question

2. A stack of CDs and DVDs includes 25 CDs
of thickness 0.152 cm each and 15 DVDs of
thickness 0.152 cm each. Find the total thickness
of the stack​

Answer 1

Answer:

The total thickness of the stack is 6.08cm

Answer 2

Answer:

$thickness \: of \: each \: cd \: = 0.152cm \\ thickness \: of \: cds \: = 25 \times 0.152cm \\ = 3.8cm$

$thickness \: of \: each \: dvd \: = \: 0.152cm \\ thickness \: of \: 15 \: dvds \: = \: 15 \times \\ 0.15 = 2.28cm$

$thickness \: of \: stack \: = 3.8cm + 2.28cm = 6.28 cm$