An ice cream costs Rs 15 more than a cold drink. If the cost of buying 5 ice creams is Rs 125, find the price of a cold drink.
let the cost of ice cream be x+15
then cost of cold drink is x
cost of 5 ice creams = rs 125
cost of 1 ice cream=125/5 = 25
x+15= 25
x=25-15=10