Question

one litre of petrol costs ₹78.55 vicky wants to fill up 20 litres of petrol in his car. how much will it's cost?

Answer 1

$<b><i>Solutions :-$

We have,

1 litre = ₹ 78.55


Now,
Find the cost of 20 litres of petrol by using the unitary method :-

1 litre = 78.55
20 litre = ₹ 78.55 × 20 = ₹ 1571


Answer : 20 litres of petrol cost ₹ 1571

Answer 2

Solutions :-

Given :

One litre of petrol costs ₹78.55
So, we can write it as,

1 litre = ₹ 78.55

Now,

Find the costs of 20 litres of petrol :-

We have to find by using unitary method,

1 litre = ₹ 78.55
20 litre = ₹ 78.55 × 20 = ₹ 1571

Hence,
The cost of 20 litres of petrol is ₹ 1571