Question

8. Initially, a shopkeeper had "x" pens. A customer bought
10% of pens from "x" then another customer bought 20%
the remaining pens after that one more customer purchase
25% of the remaining pens. Finally, shopkeeper is left with
270 pens in his shop. How many pens were there initially ir
his shop?
A. 200
B.800
C.400
D. 600
E.500​

Answer 1

Answer:

E.500

Step-by-step explanation:

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Answer 2

Answer:

E.500

Step-by-step explanation:

10% of x = x/10

remaining = x-x/10

 = 9x/10

20% of 9x/10 = 20/100*9x/10

  = 18x/100

remaining = 9x/10 - 18x/100

= 90x/100-18x/100

= 72x/100

25% of 72x/100 = 25/100*72x/100

= 18x/100

remaining = 72x/100-18x/100

= 54x/100

54x/100 = 270

x = 270*100/54

= 500

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