Question 237422
if a child sets out from school walking at a pace which will take 20 minutes to get home, and an adult sets out from home and at a pace that will take him 10 minutes to get to school, when will they meet? Also give an equation to your answer?
:
We can treat this as a "shared work" problem
Let the dist between the school and home = 1
Let t = time required for them to meet
:
{{{t/20}}} + {{{t/10}}} = 1
Multiply each term by 20
t + 2t = 20
3t = 20
t = {{{20/3}}}
t = 6{{{2/3}}} min or 6 min 40 sec