Question

If 4 1/4litres of oil costs 544, what will be the cost of 1 litre of oil? A) ₹125 B) ₹128 C) ₹132 D) ₹135​

Answer 1

Given:

Number of litres of oil = $\begin{array}{l}4\frac14\\\end{array}$ litres

Cost of $\begin{array}{l}4\frac14\\\end{array}$ litres of oil = Rs. $544$

To find:

The cost of $1$ litre of oil

Step-by-step explanation:

$\begin{array}{l}4\frac14\\\end{array}$ can be written as $4.25$ litres

Cost of $4.25$ litres = Rs. $544$

Cost of $1$ litre oil = $\begin{array}{l}\frac{544}{4.25}\\\end{array}$

⇒ $\begin{array}{l}\frac{544}{4.25}\;\times\;\frac{100}{100}\;=\;\frac{54400}{425}\\\\\end{array}$

⇒ $\begin{array}{l}\frac{54400}{425}\;=\;128\\\\\end{array}$

Answer:

The cost of $1$ litre oil is Rs. $128$