Question

Maya has $210 in a savings account for a new computer the computer cost $537.15 including sales tax. At the end of each week she deposits $27 into the account. after how many weeks will she have enough money in the account for the computer?

Answer 1

The number of weeks required to have enough money in account to buy computer is 12

Solution:

Given that Maya has $210 in a savings account for a new computer the computer cost $537.15 including sales tax

At the end of each week she deposits $27 into the account

To find: number of weeks required to have enough money in the account for the computer

Total cost of computer = $ 537.15

Amount in savings account = $ 210

Let "a" be the number of weeks required to have enough money in account to buy computer

Each week she deposits $27 into the account

So we can we frame a equation as:

total cost of computer = Amount in savings account + (number of weeks x 27)

$537.15 = 210 + a \times 27\\\\537.15-210 = 27a\\\\27a = 327.15\\\\a = 12.11$

$a \approx 12$

Thus number of weeks required is 12 approximately