contestada

Elizabeth has twice as many books as Jenny. Ester has 4 more books than Elizabeth. Together they have 39 books. How many books do they each have

Respuesta :

smallmathproblems

Answer:

Elizabeth = 14

Jenny = 7

Ester = 18

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

Elizabeth = 2x

Jenny=X

Ester=2x+4

Elizabeth + Jenny + Ester =39

2x + x + (2x+4) = 39

3x + 2x + 4 = 39

5x + 4 = 39

5x=39-4

5x=35

x=7

We replace the value of x.

Elizabeth = 2(7) = 14

Jenny = x = 7

Ester = 2x+4 = 2(7)+4 = 14+4 = 18

Otras preguntas