Question

a water tank contains 12 1/2 litres of water. if two-fifth of it was consumed. How much water is left.

Answer 1

Total water = 12 1/2 litres = 12.5 litres = 25/2 litres

Water consumed = 2/5 ( 25 /2)

= 5 litres

Water left = Total water - Water consumed

= 12.5 - 5

= 7.5 litres or 7 1/2 liters

Answer 2

Answer:

If Water tank has 12 1/2 L water

We can also write it as 25/2 L

Step-by-step explanation:

Total water in tank =25/2 L

Water consumed =2/5th of 25/2 L

                             = 2/5 * 25/2

                             =5 L

The amount of water left =Total water - Water consumed

                                          =12.5 -7

                                          = 5.5 L