Question

15. A shopkeeper sold a watch at a profit or
have made a profit of 18%. Find the cost price of the watch.
16. A dealer sells a toy at a loss of 4%. If he had sold it for 180 more, he would have m
profit of 16%. Find the cost price of the toy.
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Answer 1

Step-by-step explanation:

16. let the cp of the toy be x

4% of x + 180 = 16%of x

x/25+180 = 4x/25

4x/25 - x/25 = 180

3x/25 = 180

3x = 180×25

x = 180×25/3

x = 60×25

x = 1500

the cost price of the toy is Rs. 1500

Answer 2

Step-by-step explanation:

• lets the CP of the Toy be X
• $4 \:x of+ 180 = 16 \:of x \\ x \div 25 + 180 = 4x \div 25 \\ 4x \div 24 - x \div 25 = 180 \\ 3x \div 25 = 180 \\ 3x = 180 \times 25 \\ x = 180 \times 25 \div 3 \\ x = 60 \times 25 \\ x = 1500$
• the cost of price of the Toy is Rs 1500