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Cost of two pencils and three earasers is rs 18, while the cody of one pencil and two erasers is rs 11. the cost of each pencil is |
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Answer» LET the COST of each PENCIL be x. Let the cost of each ERASER be y. 2x+3y=18 2x=18-3y x=18-3y/2 x+2y=11 18-3y/2+2y=11 18-3y+4y/2=11 18-3y+4y=11×2 18+y=22 y=22-18 y=4 2x+3y=18 2x+3×4=18 2x+12=18 2x=18-12 2x=6 x=6/2 x=3 |
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