How many weeks of savings will it take

Question

Beyonce has $222 in her piggy bank she has $10 a week to her savings Jay-Z has 149 in his piggy bank and it's $12 a week savings how many weeks will it take for Jay-Z and Beyonce's have the same amount of money

Answer 1

Hi Les

 

Let w = number of weeks

 

Beyoncé:  222 + 10w

Jay-Z:  149 + 12w

 

When will these be equal?

149 + 12w = 222 + 10w 

2w = 73

w = 36.5

 

Since we are putting the money in once a week, they will be equal in 37 weeks