Practice Exercise
In the first week of the Year, Nancy saved $1. In each of the next 51
weeks, she saved $1 more than she had saved in the previous week. What
was the total amount that Nancy saved during the 52 weeks?
A. $1,326
B. $1,352
C. $1,378
D. $2,652
E. $2,756
B. $1,352
C. $1,378
D. $2,652
E. $2,756
Translate :
Pada minggu pertama tahun ini, Nancy menyimpan uang sebesar $ 1. Dalam setiap 51 minggu ke depan, ia menyimpan $ 1 lebih dari yang ia disimpan dalam minggu sebelumnya. Berapakah jumlah uang yang disimpan oleh nancy selama 52 minggu kedepan?
A. $ 1.326
B. $ 1.352
C. $ 1.378
D. $ 2.652
E. $ 2.756
Answer :
This question can be solved using the formula:
Sum= n/2( a + nd)
n=52 (Jumlah waktu)
a= first term=1
d= difference =1
Sum=52/2(1+52)
=1378
so the answer is (C)
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