Question Number 107487 by liki last updated on 11/Aug/20
Answered by liki last updated on 11/Aug/20
$$...\mathrm{Help}\:\mathrm{please} \\ $$
Answered by Michaelogy last updated on 11/Aug/20
$${The}\:{pace}\:={the}\:{number}\:{of}\:{times}\:{you}\:{walked}\:/{the}\:{time}\:{taken} \\ $$$${mathematically} \\ $$$${p}={n}/{t} \\ $$$${for}\:{the}\:{boy} \\ $$$${p}=\mathrm{120}/\mathrm{60} \\ $$$$=\mathrm{2}{s} \\ $$$${for}\:{the}\:{girl} \\ $$$$\begin{cases}{}\\{}\end{cases} \\ $$$$\mathrm{2}=\mathrm{100}/{t} \\ $$$$\mathrm{2}{t}=\mathrm{100} \\ $$$${t}=\mathrm{50}{s} \\ $$
Commented by liki last updated on 11/Aug/20
$$...\mathrm{sory}\:\mathrm{sir},\mathrm{how}\:\mathrm{come}\:\mathrm{60}?\:\mathrm{and}\:\mathrm{what}\:\mathrm{if}\:\mathrm{i}\:\mathrm{find}\:\mathrm{Lcm}? \\ $$