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GMAT 1: 760 Q51 V42
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Re: Alice works from Monday to Friday only. How many days does she work in [#permalink]
Condition 1:
if 1 April - Sat; then 20 working days.
If 1 April - Sun; then 21 working days.
Condition 2:
If 28 April - Sat; then 21 working days.
If 28 April - Sun; then 22 working days.

Combine 1 & 2:
With April 1 as sat, below does not satisfy:
Sa Su Mo Tu We Th Fr
1
8
15
22
29

With April 1 as Sun, below satisfies.
Su Mo Tu We Th Fr Sa
1
8
15
22
29

Condition 1 & 2
Hence 21 days is total working hours when we combine A & B.

Option C is correct.
GMAT Club Bot
Re: Alice works from Monday to Friday only. How many days does she work in [#permalink]
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