Question

The answer of 3rd one?

Answer 1

5÷800

2min and 30 sec

Please mark as best

Answer 2

Answer:

1km/h =5/18m/s

Step-by-step explanation:

we need to find time here

we know that time=distance /speed

speed=80*5/18

distance=500

time=

$\frac{500}{ \frac{5}{18} \times 80 }$

$\frac{500 \times 18}{80 \times 5}$

$\frac{50 \times 18}{8 \times 5}$

$\frac{10 \times 18}{8\times 1}$

$\frac{5 \times 9}{2}$

$\frac{45}{2}$

22.5 sec