Search found 344 matches
- by sud21
Sun Sep 20, 2015 7:22 pm- Forum: Problem Solving
- Topic: Number properties
- Replies: 7
- Views: 2014
Algebra
A sporting good store sells one type of baseball bat and one type of baseball. The cost for 2 bats and 4 balls is $160. The cost for 1 bat and 6 balls is $160, as well. If someone were to buy an equal number of bats and balls, at most how many bats can he purchase if he has a budget of $240 for the ...
- by sud21
Sun Sep 20, 2015 12:59 pm- Forum: Problem Solving
- Topic: Algebra
- Replies: 4
- Views: 1366
- by sud21
Sun Sep 20, 2015 12:58 pm- Forum: Problem Solving
- Topic: Number properties
- Replies: 7
- Views: 2014
- by sud21
Sun Sep 20, 2015 12:57 pm- Forum: Problem Solving
- Topic: Number properties
- Replies: 2
- Views: 993
Word problems
The afternoon before a popular amusement park opens for the season, Shirley has a pass that will let her ride each ride continuously without waiting in line. For each of the four most popular rides, the ride will run for an allotted time, then stop to change passengers (in negligible time) and start...
- by sud21
Sun Sep 20, 2015 12:55 pm- Forum: Problem Solving
- Topic: Word problems
- Replies: 1
- Views: 1037
Probability
A bag contains 15 wool scarves, exactly one of which is red and exactly one of which is green. If Deborah reaches in and draws three scarves, simultaneously and at random, what is the probability that she selects the red scarf but not the green scarf?
2/35
1/15
6/35
13/70
1/5
- by sud21
Sun Sep 20, 2015 12:54 pm- Forum: Problem Solving
- Topic: Probability
- Replies: 2
- Views: 1150
Number properties
What is the value of integer x?
(1) The sum of all the unique factors of x is 24.
(2) 10 < x < 20
- by sud21
Sat Sep 19, 2015 6:14 am- Forum: Data Sufficiency
- Topic: Number properties
- Replies: 3
- Views: 1253
Statistics
Does Country X have more citizens than Country Y?
(1) 60% of Country X's citizens are also citizens of Country Y.
(2) 30% of Country Y's citizens are not citizens of Country X.
- by sud21
Sat Sep 19, 2015 6:13 am- Forum: Data Sufficiency
- Topic: Statistics
- Replies: 4
- Views: 1555
Number properties
What is the value of the positive integer a?
(1) a and (a+1) each have exactly 6 factors.
(2) a < 76
- by sud21
Sat Sep 19, 2015 6:12 am- Forum: Data Sufficiency
- Topic: Number properties
- Replies: 3
- Views: 1348
Arithmetic
16 horses can haul a load of lumber in 24 minutes. 12 horses started hauling a load and after 14 minutes, 12 mules joined the horses. Will it take less than a quarter-hour for all of them together to finish hauling the load? 1. Mules work more slowly than horses. 2. 48 mules can haul the same load o...
- by sud21
Sat Sep 19, 2015 6:12 am- Forum: Data Sufficiency
- Topic: Arithmetic
- Replies: 2
- Views: 1201
Number properties
In the former Soviet Union, rubles came in denominations of 1, 3, 5, 10, 25, 50, and 100. Boris and Natasha are at the bank to change an enormous pile of 50 and 100 ruble notes, but the teller is out of 10s and is forced to give them their change in nothing but 1, 3, 5, and 25 ruble notes. Did the t...
- by sud21
Sat Sep 19, 2015 6:11 am- Forum: Data Sufficiency
- Topic: Number properties
- Replies: 1
- Views: 1086
- by sud21
Sat Sep 19, 2015 5:53 am- Forum: Data Sufficiency
- Topic: Odd even
- Replies: 4
- Views: 1618
Odd even
For positive integer n, is the product (n)(n+1)(n+2) divisible by 24?
1. n is even
2. n + 2 = 6
- by sud21
Sat Sep 19, 2015 5:52 am- Forum: Data Sufficiency
- Topic: Odd even
- Replies: 5
- Views: 1629
- by sud21
Sat Sep 19, 2015 5:52 am- Forum: Data Sufficiency
- Topic: Fractions
- Replies: 1
- Views: 1010
Integers
a, b, and c are three distinct positive integers. What is the product abc?
1. a + b + c = 7
2. ab + bc + ca = 14
- by sud21
Sat Sep 19, 2015 5:51 am- Forum: Data Sufficiency
- Topic: Integers
- Replies: 3
- Views: 1499