Question

A big car can go 150km with 25 litres of petrol how far can it go with 30 literl of petrol

Answer 1

It can go, 150/25 * 30
=6*30
=180 km

Answer 2

we can use proportions to sol've it
25:150 : : 30 : ?
?= 150*30/25
150*6/5
30*6
? =180 km