SAT question, with choices?

Question

1) If it is now 1:30, what time will it be when the hour hand has moved through an angle os 20 degrees?
a) 1:45 b) 1:50 c) 2:00 d) 2:10 e) 2:15

2) 20 is what percent of C?
a) 20 C% c) (1/20C)% d) (200/C)% e) (2000/C)%

3)If n is an integer and n, n+1, and n+2 are the lengths of the sides of a triangle, which of the following could be the value of n?
I. 1 II. 3 III. 13
A) I only B) II only C) III only D) II and III only E) I, II, III

4)a bank raised the minimum payment on its charge accounts from $10 to $20 per month. What was the percent increase in the minimum monthly payment?
a) 10% b) 20% c) 50% d) 100% e) 200%

Answer 1

1) 1.33 (as 20 degrees is 1/18 of a complete circle)

2) 20% = 1/5. Your question doesn't make sense.

3) B) 3 (It is part of a 3, 4, 5 right angled triangle)

4) E) 200%

10 * x = 20

x = 2, as a percentage increase this is 2 * 100% = 200%

Answer 2

The 1st one is 2:10...every 30 degrees on a clock are one hour, so 20 degrees is 2/3 of an hour, and that is 40 minutes.
The 2nd one I'm not sure, did you forget option B? Maybe that's the one.
The 3rd I think it is D, 2 and 3 only. It doesn't have to be a right triangle, and I think you can have a triangle with any of those dimensions, besides the values 1, 2, and 3.
And the 4th, that's a 100% increase in the min.

Answer 3

1. d is the answer (20 degrees corresponds to 40 minutes)

2. 2000 / C % i.e. e

3. II only, i.e, n can be only 3, since 3,4 and 5 are the sides of a triangle

4. d is the answer. from 10 to 20 is a 100% increase.

Answer 4

1) 40 minutes would have elapsed, so d) 2:10.
2) e, as a % is 100 times the value in % terms.
3) d) 3-4-5, and 13-14-15.
4) d) payment doubled so 100% increase.

Answer 5

1)d (1h--30degrees for hour hand, so 40min--20degrees for hour hand)
2)e (20/c * 100%)
3)b (remember 3^2+4^2=5^2)
4)d (10/10 * 100%)

Answer 6

1) None of the above. The time would be 1:33:20.

2) e

3) B

4) d