Solve the following questions. please
Suppose that you have saved P25 the first day of a week, P50 the second day, P100 on the third day, and continue to double your savings each day. How much will you saved on the 10th day?
2)A tank contains 16,000 liters of waters. Each day one half of the water in the tank is removed and not replaced. How much water remains in the tank at the end of 7th day?
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Answer:
1. P12800
2. 125
Step-by-step explanation:
An=A1(r^n-1)
1. a1= 25
r= 2
n= 10
an= 25(2^10-1)
an= 25(2^9)
an=25(512)
a10= 12800
2. A1= 8000
r=1/2
n=7
an=8000(1/2^7-1)
an=8000(1/2^6)
an=8000(1/64)
a7=125