Question

Kendall is planning to buy a laptop for $1,200 each months she double the amount she saved the previous month if she saves $20 the first month in how many months will Kendall have enough money to buy the laptop?

Answer 1

At the end of only 5 months, she has:
620mount saved each month:
1st month: 20
2nd month: 2*20
3rd month: 4*20
4th month: 8*20

Answer 2

After 6 month she can save enough money to buy the laptop.

Explanation:

Consider the provided information.

Kendall is planning to buy a laptop for $1,200 each months she double the amount she saved the previous month if she saves $20 the first month.

Let say first month she save $20 then in next month she will save $40 and so on.

Let us make a table as shown below:

Months Money Saved Total Money Saved

1st $20 $20

2nd $40 $40+$20 = $60

3rd $80 $80+$60 = $140

4th $160 $160+$140 = $300

5th $320 $320+$300 = $620

6th $640 $640+$620 = $1280

Hence, after 6 month she can save enough money to buy the laptop.