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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?

Respuesta :

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:

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

Step-by-step 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.