Question

A car travels 90km in 2½ hours. How much time is required to cover 30km in same speed. Find the distance cover In 2 hours with the same speed

Answer 1

Answer:

50min is required to cover 30Km.

And in 2 hours at same speed the car will covered 70Km.

Step-by-step explanation:

Let's simplify it.

2+1/2 hours =150min

So the car goes 90km in 150 min

Now to cover 30Km the car will need (150/90)×30=50min

Also, the car takes 150 min to cover 90Km

Then 2h=2×60=120min to cover (90÷150)×120=72Km.

That's easy.

Answer 2

$\Huge{\red{\underline{\textsf{Answer}}}}$

$\rule{200}2$

90km $\longrightarrow$ 2.5 hrs.

$\leadsto$Speed = $\sf\dfrac{90}{2.5}$ = 36 km/hr.

$\leadsto$Time required = $\rm\dfrac{60}{36}$ = $\sf\dfrac{5}{3}$ hrs

$\leadsto$Distance coverd = $\rm =36 \times 4$

$\leadsto\fbox{144km}$

$\rule{200}2$