Question

A machine always takes 5 minutes to paint an 80m white line on a road Work out the number of minutes taken to paint a 2.8km line

Answer 1

Answer:

5min = 80m

5/80=1m

5/80×2800=2.8km

175min.

Answer 2

$\large\bf{\underbrace{\red{SOLUTION:-}}}$

☞ A machine takes ‘5 min.’ to paint an 80m white line on a road .

☞ That machine paints 1m in $\rm{\dfrac{5}{80}\:or\:\dfrac{1}{16}\:min.\:}$ .

☞ For workout ‘2.8 km.’ or ‘2800m’ machine required,

$\rm{=\:\dfrac{1}{16}\:\times{2800}\:}$

$\rm{\purple{\boxed{\implies\:Time\:required\:=\:175\:minutes\:}}}$