Question

rupees 14rupees 21 is equal to 2 pens ratio 3 pens​

Answer 1

Rs 14:Rs 21:: 2 pens : 3 pens

2:3::2:3

Hence proved

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Answer 2

the cost of one pen will be 7because as let the cost of one pen be x

it is written that 2x=14

3x=21 then x=7