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Earlier discussion
2 older comments kept for context.
CHUKA MIKE
The question says at least 4 days so it should not be less than 4 days so the answer is 40+30+50 = 120.
Ans B
Oluwaseun Adeyemi
3x + 170 = 260
3x = 260 - 170
3x = 90 \(\to\) x = 30
therefore, 20 + 2x + 60 + 40
= 180