Question

If the cost of 15 pens each of the same value is Rs 600 find the cost of 20 pens?

Answer 1

Answer:

Step-by-step explanation:

15 pens =600

1 pen =600/15

1 pen= 40

20 pen = 40×20

= 800 ruppes

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Answer 2

Answer:

Step-by-step explanation:

Let x be the value of 1 pen

15x= 600

x=600/15

x=40

So the value of one pen is Rs40

Value of 20 pens = 20X40

= 800 Rs