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AfilCa [17]
4 years ago
8

Gina opened a bank account with $40. She plans to add $20 per week to the account and not make any withdrawals. After how many w

eeks will Gina have exactly $700 in her account, excluding interest?
Mathematics
1 answer:
ZanzabumX [31]4 years ago
6 0

Answer:

After 33 weeks.

Step-by-step explanation:

Let w be number of weeks.

We have been given that Gina opened a bank account with $40. She plans to add $20 per week to the account and not make any withdrawals. So the balance after w weeks will be 20w+40.

To figure out number of weeks Gina will have exactly $700 in her account, we will equate the balance after w weeks to 700.

20w+40=700

Let us subtract 40 from both sides of equation.

20w+40-40=700-40

20w=660

Upon Dividing both sides of our equation by 20 we will get,

\frac{20w}{20}=\frac{660}{20}

w=\frac{660}{20}

w=33

Therefore, after 33 weeks Gina will have exactly $700 in her account, excluding interest.

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