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Secondary 1 | Maths
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Raya
Raya

Secondary 1 chevron_right Maths chevron_right Singapore

Plz help

Date Posted: 1 year ago
Views: 239
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AC Lim
AC Lim
1 year ago
4n + 1 trips.
Let say 1A + 2K
1st trip cross = 2K →
2nd trip cross = 1K ←
3rd trip cross = 1A →
4th trip cross = 1K ←
5th trip cross = 2K →
Total 5 trips

Let say 2A + 2K
1st trip cross = 2K →
2nd trip cross = 1K ←
3rd trip cross = 1A →
4th trip cross = 1K ←
5th trip cross = 2K →
6nd trip cross = 1K ←
7rd trip cross = 1A →
8th trip cross = 1K ←
9th trip cross = 2K →
Total 9 trips

Let say 3A + 2K
1st trip cross = 2K →
2nd trip cross = 1K ←
3rd trip cross = 1A →
4th trip cross = 1K ←
5th trip cross = 2K →
6nd trip cross = 1K ←
7rd trip cross = 1A →
8th trip cross = 1K ←
9th trip cross = 2K →
10th trip cross = 1K ←
11th trip cross = 1A →
12th trip cross = 1K ←
13th trip cross = 2K →
Total 13 trips

Pattern 5,9,13,17....n
n adults = 4n +1 trips

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AC Lim
Ac Lim's answer
13108 answers (A Helpful Person)
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Raya
Raya
1 year ago
Thank you