Question

The cost of 4 pens and 8 pencils is Rupees 84. If one pen costs Rupees 12 more than the cost of one pencil, find the price of one pen and one pencil separately.

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Answer 1

Answer:

let cost of one pencil=x

cost of one pen=x+12

4 (x+12)+8×x=84

4x+48+8x=84

12x+48=84

12x=84-48

12x=36

x=36/12=3

cost of one pencil=x=3

cost of one pen=x+12=3+12=15