Sofia has been saving money to buy a new computer. For her birthday, Sofia's mother gave her twice what she had already saved. Now she has $135. a. Using x to represent the money Sofia saved before her mother's present, write an equation that represents the situation. b. How much money did Sofia have before her birthday?

Question

Mathematics

Martin Webb

10 July, 19:45

Sofia has been saving money to buy a new computer. For her birthday, Sofia's mother gave her twice what she had already saved. Now she has $135. a. Using x to represent the money Sofia saved before her mother's present, write an equation that represents the situation. b. How much money did Sofia have before her birthday?

+4

Answers (1)

Know the Answer?

Jamar Chung · Answer 1

X=money saved before her mother's present.

2x=money gave by Sofia's mother.

We can suggest this equation:

x+2x=135

3x=135

x=135/3

x=45

Answer: the equation would be: x+2x=135; and Sofia had $45 before her birthday.