Question

Joseph's age is 3 times that of his sister, Isabella. when you add Joseph's age to Isabella's age, you get 36. How old is Joseph?

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

(b) Solve the equation from part (a). Show your work. State your solution as a complete sentence.

Please help me with this! worth 30 pts probably more!

Answer 1

she is 9, he is 27. j=3*i. t (total) =j+ i therefore, t=4i, or t=i+3i

Answer 2

To find out how old Isabella is, you divide Joseph's age. As you can see, it says that Joseph is 3 times Isabella's age. Isabella is 9. This means that Joseph is 27 years old.

Equation: 36 ÷ 1.33 = 27
A variable would be I, also known as Joseph's age(27)
Equation with variable: 36 ÷ 1.33 = I(Joseph's age)