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s344n2d4d5 [400]
3 years ago
10

A student deposits the same amount of money into her bank account each week. At the end of the second week she has $30 in her ac

count. At the end of the third week she has $45 in her account. How much will she have in her bank account at the end of the ninth week?
Mathematics
1 answer:
Nonamiya [84]3 years ago
6 0
The student will have $135 in her bank account at the end of the ninth week. You can fine this out by finding out the amount she deposits a week and to do this you would take the $30 and divide it by 2 because she had $30 at the end of the second week. 
30/2=15
So you see that the student deposits $15 each week, so to find out how much money she will have in 9 weeks you will multiply her $15 by 9.
15x9=135
So the student will have $135 at the end of the ninth week. 
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