Question

Two men start from two towns 8km apart and walk towards each other and they meet in 80 minutes. If one man walks at 3km/hr, how fast does the other man walk

Answer 1

the other man walks at 3km/hr

Answer 2

distance covered by 1st man = 3 x 80/60 =4
therefore distance covered by 2nd man = 8-4 =4km
$speed \: = \: 4 \div \frac{80}{60} \\ = 4 \times \frac{60}{80} \\ = 3 \: km \: per \: hr$