Question

If 3 1/2 litre of petrol costs rs 270 3/8 than find the cost of 4 litre

Answer 1

3+1/2 litre cost= Rs.270+3/8
1 litre cost=Rs.270+3/8÷3+1/2
4 litre cost=(Rs.270+3/8÷3+1/2)*4
=Rs. (2163/8)*(2/7)*4
=Rs. 309, is the answer

Answer 2

Answer:

Rs.309

Step-by-step explanation:

Given : $3\frac{1}{2}$ liter of petrol costs rs $270\frac{3}{8}$

To Find: find the cost of 4 liter

Solution:

$3\frac{1}{2}$ = $\frac{7}{2}$

$270\frac{3}{8}$ = $\frac{2163}{8}$

So, Cost of $\frac{7}{2}$ liter petrol = Rs.$\frac{2163}{8}$

Cost of 1 liter petrol = Rs.$\frac{\frac{2163}{8}}{\frac{7}{2}}$

                                  = Rs.$\frac{309}{4}$

So, Cost of 4 liter petrol =  Rs.$\frac{309}{4} \times 4$  =Rs. 309

Hence the cost of 4 liter petrol is Rs.309