Question

On a certain day ,a tank was filled with 100 liters of water.if 1/4th of the quantity of water present beginning of that day,is consumed per day,then what would be the quantity left after 4 days ?

Answer 1

Answer:

The amount of water left after four days will be 31.69 liters.

Step-by-step explanation:

Given, the tank was filled with 100 litres of water.

According to the question,

$\frac{1}{4}$ quantity of total water is consumed per day.

∴ On Day 1,

Water at the beginning = 100 liters

Water consumed = $100 \times \frac{1}{4}$

                             = 25 liters.

Water at the end of day = $100 - (100 \times \frac{1}{4})$

                                        = $100 - 25$

                                        = 75 liters.

On Day 2,

Water at the beginning = 75 liters

Water consumed = $75 \times \frac{1}{4}$

                             = 18.75 liters.

Water at the end of day = $75 - (75 \times \frac{1}{4})$

                                        = 56.25 liters.

On Day 3,

Water at the beginning = 56.25 liters.

Water consumed = $56.25 \times \frac{1}{4}$

                             = 14 liters

Water at the end of day = $56.25 - 14$

                                        = 42.25 liters.

On Day 4,

Water at the beginning = 42.25 liters.

Water consumed = $42.25 \times \frac{1}{4}$

                             = 10.56 liters

Water at the end of the day = 42.25 - 10.56

                                              = 31.69 liters.

So, the quantity left after 4 days will be 31.69 liters.

#SPJ2

Answer 2

Answer:

The amount of water left after four days will be 31.64 liters.

Step-by-step explanation:

Given:- The tank was filled with 100 liters of water.

             Each day 1/4th quantity of the available water is consumed.

To Find:- Quantity of water left after 4 days.

Solution:-

We know that, $\frac{1}{4}$ = 0.25

On Day 1, Total amount of water in the tank = 100 liters.

Amount of water consumed = 100 × 0.25

                                               = 25 liters

∴ Amount of water left = 100 - 25 = 75 liters.

On Day 2,

Amount of water consumed = 75 × 0.25

                                               = 18.75 liters

∴ Amount of water left = 75 - 18.75

                                      = 56.25 liters

On Day 3,

Amount of water consumed = 56.25 × 0.25

                                               = 14.0625 liters

∴ Amount of water left = 56.25 - 14.0625

                                      = 42.1875 liters

On Day 4,

Amount of water consumed = 42.1875 × 0.25

                                               = 10.546875 liters

∴ Amount of water left = 42.1875 - 10.546875

                                     = 31.640625 liters

Therefore, the amount of water left after 4 days will be 31.64 liters.

#SPJ3

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