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30 votes
Ursula and Velda live 4 km apart. They leave their homes at the same time, walking towards each other. If Ursula walks at a rate of 400 m/h, and Velda walks at a rate of 600 m/h, how far apart are they 15 minutes before they meet (in m)?

User Mateusz Piotrowski
by
2.4k points

1 Answer

5 votes
5 votes

Answer: 250 m

Explanation:

Given

Distance between Ursula and Velda house is 4 km or 4000 m

Ursula walks at the rate of
400\ m/h\ or\ (20)/(3)\ m/min

Velda walks at the rate of
600\ m/h\ or\ 10\ m/min

Time taken by them to cover 4000 m is


\Rightarrow (4000)/(400+600)=4\ h\ or\ 240\ min

Distance covered by them 15 min before they meet

Ursula
=(20)/(3)* 225=1500\ m

Velda
=10* 225=2250\ m

The total length covered by them is
=1500+2250=3750\ m

They are
4000-3750=250\ m apart before they meet

User Swordray
by
2.4k points
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