Aptitude 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.**

**Keith**

*()
*

**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.

ok i got it covert km into metre.