Myra’s stamp collection consisted of 120 stamps in October. In March, her collection grew to 138 stamps. Find the percent increase between October and March.
(Points : 1)
15%
9%
18%
12%
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OpenStudy (anonymous):
@JReed231
OpenStudy (anonymous):
15%
OpenStudy (anonymous):
15%
OpenStudy (anonymous):
thanks
OpenStudy (anonymous):
The cost per minute for a conference phone call, originally $3.20, increased by 40%. What is the new price?
(Points : 1)
$4.58
$4.48
$3.60
$3.32
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OpenStudy (anonymous):
4.48 or 3.32
OpenStudy (anonymous):
okay
OpenStudy (anonymous):
let the new price be n.
so as per info 40% rise means
new price =(140)% of Old price
or, n =140*3.2/100
or,n=$4.48
OpenStudy (anonymous):
yea i say 4.48
OpenStudy (anonymous):
Fred buys several shares of stock at $24 per share and sells them at $21.12 per share. What is the percent of decrease in the price of the stock?
(Points : 1)
12.0%
11.5%
11.0%
10.5%
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OpenStudy (anonymous):
12%
OpenStudy (anonymous):
thanks
OpenStudy (anonymous):
Hannah earned $1536 in 8 years on an investment at a 4% simple interest rate. How much was Hannah’s investment?
(Points : 1)
$491.52
$4800
$3072
$768
OpenStudy (anonymous):
She earns 4% simple interest each year. That's 32% after 8 years.
Hannah started with $4800.
OpenStudy (anonymous):
So wut i did was i mulitiplied 1536 times 8 and got 12288 then i divided by thatt and got C. 3072
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OpenStudy (anonymous):
thanks im going with 4800
OpenStudy (anonymous):
Find the annual interest rate if a $7000 investment earns $840 annual simple interest in one year.
(Points : 1)
12%
12.5%
13%
13.5%
OpenStudy (anonymous):
12
OpenStudy (anonymous):
12%
OpenStudy (anonymous):
thanks
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