Due to a lack of funding, the number of students enrolled at City College went from 8000 last year to 5000 this year. Find the percent decrease in enrollment. (Round to the nearest tenth of a percent, if necessary.)
A 160%
B 62.5%
C 37.5%
D 60%
David has $14,000 to invest. He invests $9000 in a mutual fund that pays 12% annual simple interest. If he wants to make at least $2200 in yearly interest, at what minimum rate does the remainder of the money need to be invested?
A 24.4%
B 21.4%
C 20.4%
D 22.4%
P = 2L + 2W; P = 30, W = 6
A 24
B 9
C 15
D 12
2007-12-06 05:06:54 · 8 answers · asked by April M 1 in Science & Mathematics ➔ Mathematics
I'm willing to bet it took you longer to type that than it would have to answer them yourself.
2007-12-06 05:10:52 · answer #1 · answered by Anonymous · 1⤊ 1⤋
Decrease = 8000-5000 = 3000
% decrease = 3000/8000 = .375 = 37.5 %
9000*.12 + 5000x = 2200
1080 +5000x = 2200
5000x = 1120
x = 1120/5000 = .224 = 22.4%
30 = 2L +2*6
30 = 2L +12
18 = 2L
9 = L
2007-12-06 05:14:55 · answer #2 · answered by ironduke8159 7 · 1⤊ 0⤋
c. 37.5% <== 100% x (8000-5000) / 8000
d. 22.4%
[14000 - 9000] x Rate + 9000 x 0.12 = 2200
5000 x Rate + 1080 = 2200
Rate = 1120/5000 = .224 ==> 22.4 %
b. 9
L = (P -2W)/2 = (30-12)/2 = 9
2007-12-06 05:27:41 · answer #3 · answered by chrome 5 · 0⤊ 0⤋
for the first one it will be B because you times 5000 to 100 and then divide by 8000 which will end up to be 62.5%
the last one will be B
30 = 2L + 2(6)
30 -12= 2L + 12 -12
18 = 2L
L = 9
2007-12-06 05:18:53 · answer #4 · answered by Anonymous · 0⤊ 0⤋
If she is paid only on sales OVER $3,000 the she would desire to no longer gets a commission in any respect till she reaches that sales determine. So, subtract the @3,000 from the finished saes of $sixteen,000 and you get $13,000 of sales on which she replaced into compensated. If she made $420 on $13,000 of sales, it is jsut basic math. 420/13000 = 3.2%, rounded to the closest a million/10%. straight forward, eh? Martin's well being care has no longer something to do with this project as stated, so ignore it. same undemanding concepts prepare. $3250-$1150 = commissions = $2100. If he bought $35000 worth of things then the equation is 2100/35000 = 6%, precisely like the 1st project. Get it now?
2016-11-13 21:01:30 · answer #5 · answered by monsalvatge 4 · 0⤊ 0⤋
1 is B, i cant be bothered to do the 2nd one, and in the 3rd: L=9
2007-12-06 05:15:06 · answer #6 · answered by Amath 2 · 0⤊ 0⤋
1c
2d
12% on 9k is 1080
2200-1080=1120
1120/5000=22.4%
3b
2007-12-06 05:22:09 · answer #7 · answered by jjols 2 · 0⤊ 0⤋
i think the first one is C
and the third one is b
but the second one confused the **** out of me =/
2007-12-06 05:18:13 · answer #8 · answered by Becca 2 · 0⤊ 0⤋