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Question

In the first week of the year, Nancy saved 1.Ineachofthenext51weeks,shesaved1 more than she had saved in the previous week. What was the total amount that Nancy saved during the 52 weeks?

A
1326$
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B
1352$
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C
1378$
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D
2652$
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E
2756$
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Solution

The correct option is C 1378$
Let's first set up the pattern of Nancy's savings. The first week she saved 1,thesecondweekshesaved2, the third week she saved 3,andsoforth.Therefore,thetotalamountofmoneyshewillhavesavedattheendof52weekswillbe:1 + 2+3 + 4++52.

Sum Of First n Natural Numbers = n(n+1)2.

= 52(52+1)2
= 1378.
Hence, the total amount that Nancy saved during the 52 weeks is $1378.

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