Math, asked by shadhnagupta2468, 11 months ago

3 pens and 5 pencil cost Rs 14 . What will be the cost of 12 pens and 20 pencils

Answers

Answered by AnushkaThomas
16

The cost of 12 pens and 20 pencils is ₹56.

Answered by Anonymous
26
Hey Ma8,

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let the cost of pen be X and pencil be Y

given ,

3X + 5Y = 14 (equation 1)

TO FIND => 12X + 20Y = ?

------------------------------------------------------------------------

multiply 4 both side in equation 1

3X × 4 + 5Y × 4 = 14 × 4

12X + 20Y = 56

hence the cost of 3 pens and 5 pencil is 56

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