keldeo05eer keldeo05eer
  • 15-11-2019
  • Mathematics
contestada

Jasmine is 5 years younger than twice her sister's age. If the sum of jasmine and her sister's age is 61, how old are the girls?

Respuesta :

meyoten
meyoten meyoten
  • 15-11-2019

Answer:

jasmine is 39, her sister is 22

Step-by-step explanation:

let j be jasmine's age and s be her sister's age. we can set up these two formulas:

2s - 5 = j

j + s = 61

replace j in the second formula with 2s - 5:

2s - 5 + s = 61

simplify: 3s - 5 = 61

add 5 to each side: 3s = 66

divide each side by 3: s = 22

now replace s with 22 in the first formula:

2(22) - 5 = j

multiply: 44 - 5 = j

subtract: 39 = j

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