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  • 25-09-2020
  • Mathematics
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Jennifer is 3 years older than twice Zack’s age. The sum of their ages is 21. What are their ages?

Respuesta :

savannahlynn07
savannahlynn07 savannahlynn07
  • 28-09-2020

Answer:

Jennifer is 15 and Zack is 6

Step-by-step explanation:

z+ (2z+3)=21

z+2z+3-3=21-3

z+2z=18

3z=18

3z/3=18/3

z=6

so plug 6 in for all the variables and their ages are

Zack-6

Jennifer-15

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