A Shopkeeper marks the price of a refrigerator at Rs. 30,000/- and gives a discount of 15%. He also gives a mixer grinder worth Rs. 1,500 free with the refrigerator and actually earns a profit of 20% by selling the refrigerator. Find the cost price of the refrigerator.
S.P = 85% of 30,000 = 25,500 &Profit = 20% ∴ C.P = 25500`xx100/120` [if gte msEquation 12]>