In New York, 2.5 kg of rice costs $6.25{\char"24}6.25$6.25. In London, 1.5 kg of the same rice costs £3.15£3.15£3.15. The exchange rate is £1=$1.24£1 = {\char"24}1.24£1=$1.24.
In which city is rice better value for money, in New York or in London? You must show how you get your answer.