Question

13 liters of water comes out of a tap in one minute. Find the amount of water filled in the bucket in half an hour.

• A. 240 liters
• B. 390 liters
• C. 450 liters
• D. 600 liters

Answer 1

The correct option is B 390 liters

To find the water stored in the bucket we need to multiply the time and the rate at which water is coming out of the tap.
We know that in an hour = 60 minutes are there
So in half an hour = 30 minutes
Total amount of water filled in the bucket =
$\begin{array}{ccccc}& & 3& 0& \\ & \times & 1& 3& \\ & & 9& 0& (30\times 3)\\ +& 3& 0& 0& (30\times 10)\\ & 3& 9& 0& \end{array}$
So after half an hour 390 liters of water will be there.