Question

A water pump, pumps out 4500 litres of water in 1 hour. If it works for 6 hours a day, find the amount of water it pumps out in a week. a) 18900b) 189000 1 c) 31500 d) 27000 1​

Answer 1

Given :

• Rate of water pumping = 4500 litres
• Time for which the water pump works per day = 6 hours
• Water pumped in a week = ??

To Find :

The total water pumped in a week

To Be done :

We are given ,

The rate of pumping per hour = 4500 hours

The time for it works every day = 6 hours

So, Firstly we are going to find the water that is pumped every day.

No. of Days in a week = 7

So, we will multiply the result of previous one with seven to get the final answer

Solution :

Water pumped in a day = Rate×time

= 4500 litre/hour × 6 hours

= 4500 litre × 6

= 27000 litres

So, the Pump, pumps 27000 litre in a day

So, water pumped in a day

= 27000 × 7

= 189000 litres

Hence, Water pumped in a week = 1,89,000 litres

Hope it helps you !

Answer 2

Given: A water pump pumps out 4500 litres of water in 1 hour and it works for 6 hours a day.

To find The amount of water it pumps out in a week.

Solution:

One week has seven days.

A water pump pumps out 4500 litres of water in 1 hour and it works for 6 hours a day.

So, it will work for 7×6=42 hours in a week.

In one hour it pumped out 4500 litres of water.

In 42 hours it will be pumped out 4500×42=189000 litres of water.

189000 litres of water is pumped out in a week.

The correct option is b) 189000.