Topic : Equation-Linear- Word Problem
1.
2.
3.
from: category_eng

1.Mathematical Writing
x+(x+4)=10
x: number of men

x+(x+4)=10

2x+4 =10
x=3

so.. number of women is 7.

Ans: D

2.Mathematical Writing
x=2y..
(1) x= 5? or y=5?
(2) x+2y=15

Ans: b

3.Mathematical Writing

Ans: D

1.
decimal and fraction mixed.. Calculation focused.
2.
What is the distance between R and U?
3.
Set Variables
l=2w
4.

5.

6.
.03T=450,000
7.
(2) don't know how much exceeds the 2500
8.

9.

10.
0.9L=L-5,
0.85M=M-6
11.
Set up the variable what you want to find. .07(t-1000)=87.5
12.
1/2 of Earning =1/2*e
13.
can you express the situation with the equation? (1)(3/7)C+200= C/2 (2)3C/7=C-1600
14.

15.
no information about the reduced price..
16.
You can't tell that Paula sold 92% of total
17.
500*n= 1/ 16 (500 *n^2)

18.

19.

20.
Making an equation using variables
21.
(1)3*0.42= (x-3)*0.18 -0.36 (2)2.88=3*0.42+(x-3)*0.18
22.
30w=(w+1.5)*(30-t) (1)225=30*w (2)(w+1.5)=1.2w
23.
(1)300+.05(t-1000)=.10*t (2)
24.
4400= 200C +1000
25.
(1)4*45=120+3x (2)(120+x)/2=25+(120+3x)/4
26.
make an equation . Do you know how to set up the variable in this case?
1. a
Calculation
decimal and fraction mixed.. Calculation focused.
2. B
Understanding
What is the distance between R and U?
(1)56=2y
(2)69=1.5x

so... (2) is sufficient to find x value.

3. B
Mathematical Writing
l=2w
2l+2w=10
l=2w

6w=10
w=5/3
l=10/3
4.
5.
6. D
.03T=450,000
7. a
(2) don't know how much exceeds the 2500
8.
9. b
10. C
0.9L=L-5,
0.85M=M-6
11. C
Set up the variable what you want to find. .07(t-1000)=87.5
12. A
1/2 of Earning =1/2*e
13. D
can you express the situation with the equation? (1)(3/7)C+200= C/2 (2)3C/7=C-1600
14. B
15. E
no information about the reduced price..
16. A
You can't tell that Paula sold 92% of total
17. D
500*n= 1/ 16 (500 *n^2)
18.
19.
20. E
Making an equation using variables
21. D
(1)3*0.42= (x-3)*0.18 -0.36 (2)2.88=3*0.42+(x-3)*0.18
22. D
30w=(w+1.5)*(30-t) (1)225=30*w (2)(w+1.5)=1.2w
23. D
(1)300+.05(t-1000)=.10*t (2)
24. d
4400= 200C +1000
25. D
(1)4*45=120+3x (2)(120+x)/2=25+(120+3x)/4
26.
make an equation . Do you know how to set up the variable in this case?