Respuesta :

ricchad

Answer:

t = 5.2 min

Explanation:

given:

A man walks 2km in 1.5min,

find:

how many time need to walk 6.9km​

solution:

its a ratio and proportion

    2 km  x    6.9 km

  1.5 min            t

then cross multiply:

2 (t) = 6.9 ( 1.5)

t = 10.35 / 2

t = 5.2 min