# Moderate Time and Work Solved QuestionAptitude Discussion

 Q. Water flows into a reservoir which is 200 m long and 150 m wide, through a pipe of cross-section (0.3m x 0.2m) at 20 kmph. In what time will the water level be 8?
 ✖ A. 100 hrs ✖ B. 150 hrs ✖ C. 175 hrs ✔ D. 200 hrs

Solution:
Option(D) is correct

Volume of water collected in the tank in $1$ hour

$⇒ 0.3×0.2×20×1000=1200$ m cubic

If after $t$ hours, the water is at height of 8m,

$1200t=200×150×8$

$⇒ t$ = 200 Hours.

## (3) Comment(s)

Keith
()

ok i got it covert km into metre.

Keith
()

from where did you get that 1000

Abdul
()

Option(D) is correct

Volume of water collected in the tank in $1$ hour

$⇒ 0.3×0.2×20×1000=1200$ m cubic

If after $t$ hours, the water is at height of 8m,

$1200t=200×150×8$

$⇒ t$ = 200 Hours.