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At one store a trophy costs $12.50. Engraving costs $0.40 per letter. At another store, the same trophy costs $14.75. Engraving costs $0.25. How many letters, e, must be engraved for the costs to be them same?

Respuesta :

apologiabiology
12.50+0.4e=cost1
14.75+0.25e=cost2
when will costs be same


12.5+0.4e=14.75+0.25e
minus 12.5 from both sides
0.4e=2.25+0.25e
minus 0.25e from both sides
0.15e=2.25
divide both sides by 0.15
e=15




15 letters

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