Search found 20 matches
Red Heads
What percent of a group of people are women with red hair?
(1) Of the women in the group, 5 percent have red hair.
(2) Of the men in the group, 10 percent have red hair.
- by MalcolmW
Mon Dec 07, 2015 6:51 pm- Forum: Data Sufficiency
- Topic: Red Heads
- Replies: 2
- Views: 1312
easy but...
22. The ratio 2 to 1/3 is equal to the ratio
(A) 6to1
(B) 5to1
(C) 3to2
(D) 2to3
(E) 1to6
- by MalcolmW
Wed Dec 02, 2015 6:42 pm- Forum: Problem Solving
- Topic: easy but...
- Replies: 3
- Views: 2569
Percentage
Lucy invested $10,000 in a new mutual fund account exactly three years ago. The value of the account increased by 10 percent during the first year, increased by 5 percent during the second year, and decreased by 10 percent during the third year. What is the value of the account today? (A) $10,350 (B...
- by MalcolmW
Mon Nov 30, 2015 5:20 pm- Forum: Problem Solving
- Topic: Percentage
- Replies: 6
- Views: 2830
avg
A student’s average (arithmetic mean) test score on 4 tests is 78. What must be the student’s score on a 5th test for the student’s average score on the 5 tests to be 80 ? (A) 80 (B) 82 (C) 84 (D) 86 (E) 88 I have an explanation for the answer to this question but the breakdown does not make s...
- by MalcolmW
Sun Nov 29, 2015 6:48 pm- Forum: Problem Solving
- Topic: avg
- Replies: 5
- Views: 3533
ill be taking my test on 12/12 i just heard of this method. I'm not sure if that is enough time to implement it into my practice/studying. Forget conventional ways of solving math questions. In DS, Variable approach is the easiest and quickest way to find the answer without actually solving the prob...
- by MalcolmW
Sat Nov 21, 2015 11:49 pm- Forum: Data Sufficiency
- Topic: Why does time matter
- Replies: 5
- Views: 3141
lost in the sauce
If A and B are positive integers, is the product AB even?
(1) The sum A + B is odd.
(2) A is even.
- by MalcolmW
Thu Nov 19, 2015 6:47 pm- Forum: Data Sufficiency
- Topic: lost in the sauce
- Replies: 3
- Views: 1949
Why does time matter
On a recent trip, Mary drove 50 miles. What was the average speed at which she drove the 50 miles? (1) She drove 30 miles at an average speed of 60 miles per hour and then drove the remaining 20 miles at an average speed of 50 miles per hour. (2) She drove a total of 54 minutes. I chose A as I norma...
- by MalcolmW
Tue Nov 17, 2015 6:16 pm- Forum: Data Sufficiency
- Topic: Why does time matter
- Replies: 5
- Views: 3141
There is nothing that anchors these points to each other. K could be very close to J, or it could be very close to L. These different position would create different distances from K to L. Thank you. I understand your explanation. The problem is when I think this way I am usually wrong and when I d...
- by MalcolmW
Tue Nov 10, 2015 6:34 pm- Forum: Data Sufficiency
- Topic: Exits
- Replies: 7
- Views: 1944
Exits
A certain expressway has Exits J, K, L, and M, in that order. What is the road distance from Exit K to Exit L ? (1) The road distance from Exit J to Exit L is 21 kilometers. (2) The road distance from Exit K to Exit M is 26 kilometers. I thought the answer would be D because, we know the distance fr...
- by MalcolmW
Mon Nov 09, 2015 6:19 pm- Forum: Data Sufficiency
- Topic: Exits
- Replies: 7
- Views: 1944
- by MalcolmW
Mon Nov 09, 2015 5:31 pm- Forum: Data Sufficiency
- Topic: ALTERNATE METHOD
- Replies: 4
- Views: 1499
ALTERNATE METHOD
If the two floors in a certain building are 9 feet apart, how many steps are there in a set of stairs that extends from the first floor to the second floor of the building? (1) Each step is 3/4 foot high. (2) Each step is 1 foot wide. The video I am watching solves as follows my question is where do...
- by MalcolmW
Mon Nov 09, 2015 5:27 pm- Forum: Data Sufficiency
- Topic: ALTERNATE METHOD
- Replies: 4
- Views: 1499
Unfortunately, no. I believe I'm having trouble approaching each problem the proper way. Ok. To help you out, please explain in details step by by step why you thought C was correct and then I will see where you went wrong. After reading the question I notice that the first statement gives me only ...
- by MalcolmW
Sat Nov 07, 2015 6:31 am- Forum: Data Sufficiency
- Topic: Explanation
- Replies: 11
- Views: 2002
Unfortunately, no. I believe I'm having trouble approaching each problem the proper way. Ok. To help you out, please explain in details step by by step why you thought C was correct and then I will see where you went wrong. After reading the question I notice that the first statement gives me only ...
- by MalcolmW
Sat Nov 07, 2015 4:47 am- Forum: Data Sufficiency
- Topic: Explanation
- Replies: 11
- Views: 2002
@TheCeo After reading the question I notice that the first statement gives me only a portion of what I need to completely answer the question. To my thinking, without the knowledge of how many girls are in the class I cannot properly answer the target question. Making it insufficient. I move on to t...
- by MalcolmW
Fri Nov 06, 2015 11:28 am- Forum: Data Sufficiency
- Topic: Explanation
- Replies: 11
- Views: 2002
- by MalcolmW
Thu Nov 05, 2015 11:24 am- Forum: Data Sufficiency
- Topic: Explanation
- Replies: 11
- Views: 2002