Question

. Kim's age is twice that of her sister. When you add Kim's age to her sister's age, you get 36. How old is each sister?

(a) Write an equation that represents the situation. Explain any variable used.

(b) Solve the equation from Part (a). S how your work. State your solution as a complete sentence.

Answer 1

If Kim and her sisters age equal 36 an equation would be k+s=36

Answer 2

k = kims age, s = her sisters age

k = 2s
k + s = 36

2s + s = 36 <== ur equation
3s = 36
s = 36/3
s = 12 <== the sister is 12

k = 2s
k = 2(12)
k = 24 <== Kim is 24