Answer:
So he should go with option B
Step-by-step explanation:
The Greens will need to save to achieve his goal = $10,620
After one year if they have saved $6120.00 this means they save
6120 ÷ 12 = $510 per month
This means after 18 months they save
510 × 18 = $9,180 only. this is not enough for his goal.
so if he increases the amount of money by adding $120 from their original plan he could achieve his goal
= 510 + 120 = $630 per month
= 630 × 18 months = $11,340
So he should go with option B.