Question

River Yamuna was flowing at 200m level mark at was Wazurabad Bridge in Delhi during rainy season. If the level rises by5 metre every hour after how many hours the level will reach 245m level mark?​

Answer 1

9 hrs

was flowing = 200m

will reach = 245m

245+(-200)

= 245-200

= 45m

the river level rises by = 5cm every hour

= 45÷5cm

= 45/5 = 9/1 = 9 hrs

Answer 2

Answer:

The time taken to reach 245m from 200m level mark is 9hours.

Step-by-step explanation:

Given the river Yamuna was flowing at 200m level mark.

Rate of rise of the water level is 5 m/hr

The final water level mark is 245m.

Change in the water level is the difference between the level marks

$= 245-200=45m$

As the river level rises by 5m for every hour, so to find the time taken to reach 245m from 200m, divide the raised level with the rate or rise.

Therefore, the required time to reach 245m level mark is  

$\dfrac{45}{5} = 9 ~hours$

Therefore, the time taken to reach 245m from 200m level mark is 9hours.