Question

3 liters of milk cost rupees 75. Find the cost of 5 1by2 liters

Answer 1

Cost of 3 liters of milk = Rs75

Cost of 1 liter of milk = 75/3 = Rs 25

Now ,

Cost of 5 1by2 liters milk

= 25 × 5.5

= Rs 137.50

••••

Answer 2

$\textbf{\underline{Answer :-}}$

The cost of ${\tt{5 \frac{1}{2} \: liters \: }}$is Rs. 137.5

$\textbf{\underline{Explanation :-}}$

$\textsf{\underline{Given :-}}$

Cost of 3 liters of milk = Rs.75

$\textsf{\underline{To find :}}$

The cost of ${\tt{5 \frac{1}{2} \: liters \: }}$milk.

$\textsf{\underline{Solution :}}$

First we need to find the cost 1 liter of milk.

1 liter of milk =

$\tt{\Rightarrow \dfrac{75}{3} }$

$\tt{\Rightarrow25}$

Cost of one liter milk = Rs.25

Cost of ${\tt{5 \frac{1}{2} \: liters \: }}$ =

$\tt{\Rightarrow 5\dfrac{1}{2} \times 25 }$

$\tt{\Rightarrow \dfrac{11}{2} \times 25}$

$\tt{\Rightarrow \dfrac{275}{2} }$

$\tt{\Rightarrow137.5}$

$\therefore$The cost of ${\tt{5 \frac{1}{2} \: liters \: }}$milk is Rs. 137.5