Cost of a toffee is 50 paise and cost of a chocolate is rupees 10. Find the ratio of the cost of a toffee to the cost of a chocolate.
Cost of toffee = 50 paise
cost of chocolate = 10 rupees
1 rupee = 100 paise
Therefore, 10 rupees equal 1000 paise
So, the cost of chocolate = 1000 paise
the ratio of the cost of toffee to the cost of chocolate is 50:1000 = 1:20.