Allen started to save money from his daily allowance. In the first week he saved $5.8 and every next week $3.6 more than the pre
vious week. How much money did he save in 4 weeks?
2 answers:
Answer: $16.60
Step-by-step explanation:
5.80+ 3.60= 9.40+ 3.60= 13.00+ 3.60= 16.60
So after 4 weeks he earned $16.60
Answer:
$44.8.
Step-by-step explanation:
Let a = first term = $5.8
d = common difference = $3.6
n = number of terms = 4
Using the sum of terms
Sn = n/2((2a + (n - 1)d))
Sn = 4/2((2(5.8) + (4 - 1)3.6))
= 2(11.6 + 10.8)
= 2(22.4)
= 44.8
In 4 weeks, Allen would have saved $44.8.
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3
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