Question

Two boats traveling at a speed of 10 km/h and 15 km/h are 20 km apart started heading towards each other. what is the distance one minut before they collide

Answer 1

Method 1:

One minute before collision:

Distance traveled by boat₁ = $15*\frac{1}{60}$ $=\frac{1}{4}$

Distance traveled by boat₂=$10*\frac{1}{60}$ $=\frac{1}{6}$

Distance between them before collision will be

$\frac{1}{4} + \frac{1}{6} =\frac{5}{12}$

(Since they are heading towards each other i.e moving in opposite direction)