18.
What is 7% of 49?
A. 4.34
B. 1.56
C. 2.34
D. 3.43
19.
If a head of lettuce costs the grocery store $0.45 and the store wants a profit of 20% above their cost, how much will the lettuce cost the consumer?
A. $0.50
B. $0.21
C. $0.43
D. $0.54
20.
If a swimming pool has a capacity of 150 people and the pool is at 120% capacity now, how many people are in the pool?
A. 200
B. 168
C. 123
D. 180
2007-12-31 08:10:01 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
(#1):
7% of a number, so convert % to decimals first 7/100 = 0.07
49*0.07=3.43 [Answer: D]
(#2):
0.45*1.20= 0.54 [Answer: D] (same as in #1)
(#3):
150*1.20 =180 [Answer: D] (same as in #1,2)
CONVERT PERCENTS to DECIMALS before solving.
2007-12-31 08:14:18 · answer #1 · answered by ¿ /\/ 馬 ? 7 · 0⤊ 0⤋
Here:
For question 18:
multiply 0.07 by 49 to find your answer.
For question 19:
multiply 0.45 by 0.20 and then add your answer to 0.45 to find your final answer.
For question 20:
multiply 150 by 1.20 to find your answer.
I hope this helps.
Now, do the math!
2007-12-31 08:19:37 · answer #2 · answered by Mathland 2 · 0⤊ 0⤋
1.d
2.d
3.d
2007-12-31 08:18:03 · answer #3 · answered by bobafett393 2 · 0⤊ 0⤋
D,D,D
2007-12-31 08:17:47 · answer #4 · answered by Satch 1 · 0⤊ 0⤋
Really easy questions.
18) 7%= .07
.07*49= 3.43
19) .45*.20= .09
.45+.09= .54
20) 150*1.20=180 (1.20= 120%)
2007-12-31 08:17:38 · answer #5 · answered by funvonne 2 · 0⤊ 0⤋
49 * 0.07 = 3.43
45 * 1.2 = 0.54
150 * 1.2 = 180
2007-12-31 08:17:03 · answer #6 · answered by gtmooney14 3 · 0⤊ 0⤋
7% of 49 = 49*7/100 = 3.43
will cost the consumer $0.45*120/100 = $0.54
people now are 150*120/100 = 180
2007-12-31 08:16:46 · answer #7 · answered by sv 7 · 0⤊ 0⤋