Question

8. A man runs at the speed of 10 km/hr. How much time will he take to cover 750 metres?​

Answer 1

Solution : -

Total Speed = 10km/hr.

Distance Covered = 750 = 0.75

As we know that , 1km = 1000m

Formula : -

Time = Distance/Speed

Now : -

0.75/10

0.075 hr. [Answer]

Answer 2

GIVEN :

• A man runs at the speed of 10 km/hr.

• Distance = 750 m

TO FIND :

• How much time will he take to cover 750 metres.

SOLUTION :

$\setlength{\unitlength}{1.6mm}\begin{picture}(30,20)\linethickness{2 mm}\put(2,2){\line(0,1){5}}\qbezier(-0.8,9)(-1,9)(1.5,7)\qbezier(-2.3,8)(-2.4,6)(-2.5,4)\qbezier(-2.5,4)(-2.8,2)(-3.2,0)\linethickness{4 mm}\put(-1.6,8){\line(0,1){2}}\put(-1.5,18){\circle*{4}}\linethickness{1.5 mm}\qbezier(-1.7,15)(-4.1,12)(-4.1,12)\put(-4.1,12){\line(0,-1){3}}\qbezier(0,15)(1.5,12)(1.5,12)\qbezier(1.5,12)(3,11.8)(4,11.6)\linethickness{0.2mm}\put(-2.95,10){\dashbox{0.1}(2.6,6)[l]}\linethickness{2mm}\put(-4,30){\line(1,0){45}}\put(-4,-15){\line(1,0){45}}\put(2,-1){\line(0,1){3}}\linethickness{0.6mm}\put(-4.6,-1){\line(1,0){45}}\linethickness{0.4mm}\put(8,20){\dashbox{0.1}(19,4)[l]}\put(2.5,15){\vector(1,1){5}}\put(8.5,21){speed = 10km/h}\linethickness{0.2mm}\put(6.5,-6){\dashbox{0.1}(19,4)[l]}\put(5.5,-5){\vector(-1,0){10}}\put(8.5,-5){Distance=0.75km}\put(27,-5){\vector(1,0){9}}\end{picture}$

• Speed = 10 km/hr

• Distance = 750 m

Converting meter into kilometer :

➨ 750 m = 750/1000 = 0.75 km

★ Formula used :

$\large{\underline{\boxed{\gray{\bf Time = \dfrac{Distance}{Speed}}}}}$

➨$\sf Time = \dfrac{0.75}{10}$

➨$\pink{\sf Time = 0.075\:hours}$

Converting hour into seconds :

➨ 0.075 × 60 × 60

➨ 0.075 × 3600

➨ 270 sec

Therefore, 270 seconds time will take to cover 750 meter.