Question

Q.9) A shopkeeper bought 400 pens and 900
pencils for Rs 13,400. If he sells the pens at 10%
profit and the pencils at 20% profit, he earns a
total profit of Rs 1,880. The cost of a pen is (In
Rs)?​

Answer 1

Answer:

20rs

Explanation:

C.P of pen = x and C.P of Pencil = y

400x+900y=13400—–(1)

40x+180y=1880—–(2)

Solving both the equations, we get x=20 and y= 6

Therefore the cost of a pen is Rs.20.

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