Question 55
On selling 15 balls for ₹450, there is a loss equal to the cost price of 5 balls. The cost price of a ball is:
Solution
On selling 15 balls for ₹450, there is a loss equal to the cost price of 5 balls.
Let's assume the cost price and selling price of each ball is 'CP' and 'SP'.
15CP-15SP = 5CP
15CP-450 = 5CP
15CP-5CP = 450
10CP = 450
CP = 45
So the cost price of a ball is ₹45.
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