Question

A tank has 45 litres of petrol in it . At present ,it is only 40% of its full capacity. How many more litres of petrol are to be filled in the tank to use 95% of its capacity​

Answer 1

Given:

A tank has 45 liters of petrol in it . At present ,it is only 40% of its full capacity. How many more liters of petrol are to be filled in the tank to use 95% of its capacity

Solution:

Assume that the capacity od the tank is $x$ liters,

According to the question,

$\[ \Rightarrow x \times \frac{{40}}{{100}} = 45\]$

$\[ \Rightarrow x = \frac{{45 \times 100}}{{40}}\]$  liters

Calculate the 95% of $x$,

$\[ \Rightarrow x = \frac{{45 \times 100}}{{40}} \times \frac{{95}}{{100}}\]$

$\[ \Rightarrow x = \frac{{45 \times 95}}{{40}}\]$

$\[ \Rightarrow x = 106.875\]$ liters,

Calculate amount of petrol, required more to fill the tank 95%,

$\[\begin{array}{l} = 106.875 - 45\\ = 61.875\,{\rm{liters}}\end{array}\]$

Hence, 61.875 liters of petrol are more required to fill in the tank to use 95% of its capacity​.

Answer 2

Answer:

61.88 litres

May this help you