Problema Solution
Judy has $20 nd is saving at a rate of $6 per week. Ida has $172 and is spending at a rate of 4$ per week. After how many weeks will they each have the same amount of money?
Answer provided by our tutors
let 'x' be the number of weeks after they each have the same amount of money
after x weeks Judy will have: 20 + 6x
after x weeks Ida will have: 172 + 4x
after x weeks they will have the same amount of money that is
20 + 6x = 172 + 4x
by solving we find
x = 76 weeks
click here to see the step by step solution of the equation
indeed after 76 weeks Judy will have 20 + 6*76 = $476 and Ida will have also have the same amount 172 + 4*76 = $476.