Final answer:
Misty will save 20% of her $2500 monthly income which is $500 per month, and to reach her $3000 savings goal, it will take her 6 months.
Step-by-step explanation:
Misty is planning to save money for her family's vacation using the 50/30/20 budget rule, which dictates that 50% of your income should go to necessities, 30% to wants, and 20% to savings. Given that Misty's monthly income is $2500, applying the 20% rule means she will allocate 20% of her income to savings. Therefore, 20% of $2500 is $500 ($2500 * 0.20 = $500). To reach her savings goal of $3000, we will divide the total amount she wants to save by the amount she saves each month, which gives us $3000 / $500 = 6 months. Hence, it will take Misty 6 months to save up for her vacation.