Question

13 L of water comes out of a tap in one minute. Water discharge by the tap in half an hour is .

• A. 600 L
• B. 390 L
• C. 450 L

Answer 1

The correct option is B 390 L

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 L of water will be there.