Question

My mother buys 13.5 ltrs of oil If each litre costs Rs 324 then how much does she spent?

Answer 1

one litre is 324 rupees ... then 13.5 litres would be
13.5*324
rupees 4374

Answer 2

each litre =Rs 324
then
buys 13.5ltrs
cost of 13.5 ltrs=324×13.5
=4,374