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Problem
Problem
Two ships
A
A
A
and
B
B
B
are
10
10
10
km apart on a line running south to north. Ship
A
A
A
farther north is streaming west at
20
20
20
km/h and ship
B
B
B
is streaming north at
20
20
20
km/h. What is their distance of closest approach and how long do they take to reach it?
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