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Tom is 4 inches taller than Sally together their heights equal 124 inches

a.create an equation to represent the situation.
b.Solve your equation
c. How tall is Sally?
d. How tall is Tom?

1 Answer

4 votes

Answer:

Tom's height = x = 64 inches

Sally's height = y = 60 inches

Explanation:

Let us represent

Tom's height = x

Sally's height = y

Tom is 4 inches taller than Sally

x = y + 4

Together their heights equal 124 inches

x + y = 124

We substitute y + 4 for x

y + 4 + y = 124

2y + 4 = 124

Collect like terms

2y = 124 - 4

2y = 120

y = 120/2

y = 60

Solving for x

x = y + 4

x = 60 + 4

x = 64

Therefore,

Tom's height = x = 64 inches

Sally's height = y = 60 inches

User Olivierlemasle
by
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