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An investment of d dollars at k percent simple annual interest yields $600 interest over a 2-year period. In terms of d, what dollar amount invested at the same rate will yield $2,400 interest over a 3 year period? A)2d/3 B)3d/4 C)4d/3 D)3d/2 E)8d/3 Can someone explain this one? OA is E If A is the...

by GMATWisdom

Mon Jan 01, 2018 7:59 am
Forum: Problem Solving
Topic: Interest Rate Growth
Replies: 7
Views: 2749

Jacob marks his goods up by 75% and then offers a discount on the marked price. The profit that he makes after offering the discount is 40%. What % discount did Jacob offer? A. 15% B. 20% C. 25% D. 35% E. 75% Is there a strategic approach to this question? OA B I think we should not think of strate...

by GMATWisdom

Mon Jan 01, 2018 7:06 am
Forum: Problem Solving
Topic: Jacob marks his goods up by 75%
Replies: 3
Views: 897

Marion rented a car for $18.00 plus $0.10 per mile driven. Craig rented a car for $25.00 plus $0.05 per mile driven. If each drove d miles and each was charged exactly the same amount for the rental, then d equals (A) 100 (B) 120 (C) 135 (D) 140 (E) 150 Can some experts show the best way to solve t...

by GMATWisdom

Sat Dec 30, 2017 5:42 pm
Forum: Problem Solving
Topic: Marion rented a car for $18.00
Replies: 3
Views: 1452

If a is an even integer and b is an odd integer which of the following must be an odd integer : A. a/b B. ab C. 2a+b D. 2(a+b) E. 3a/b OA is C What is the concept of Odd and Even here? An Expert view is needed.Thanks Let us try the options one by one A. a/b can be an integer or a fraction hence rul...

by GMATWisdom

Fri Dec 29, 2017 9:48 am
Forum: Problem Solving
Topic: Integers Properties
Replies: 1
Views: 604

A rancher is constructing a fence by stringing wire between posts 20 feet apart. If the fence is 400 feet long, how many posts must the rancher use? (A) 18 (B) 19 (C) 20 (D) 21 (E) 22 Can some experts show the best solution? OA D for 20=(20x1) feet number of posts required is 2 .......40=(20x2).......

by GMATWisdom

Thu Dec 28, 2017 10:13 am
Forum: Problem Solving
Topic: A rancher is constructing
Replies: 2
Views: 916

What is the average of 1/2, 2/5 and 3/10? A. 1/5 B. 3/10 C. 2/5 D. 1/2 E. 6/5 The OA is the option C . Experts, is there a fast way to solve this PS question? Thanks in advanced. The faster way depends on the given fractions only . For example in this case you clearly see that the fractions are equ...

by GMATWisdom

Thu Dec 28, 2017 9:25 am
Forum: Problem Solving
Topic: What is the average of 1/2, 2/5 and 3/10?
Replies: 5
Views: 1059

During a trip on an expressway, Dron drove a total of x miles. His average speed on a certain 5-mile section of the expressway was 30 miles per hour, and his average speed for the remainder of the trip was 60 miles per hour. His travel time for x-mile trip was what percent greater than it would hav...

by GMATWisdom

Wed Dec 27, 2017 4:54 pm
Forum: Problem Solving
Topic: During a trip on an expressway, Don drove a total of...
Replies: 4
Views: 998

Two trains started simultaneously from opposite ends of a 100-mile route and traveled toward each other on parallel tracks. Train X, traveling at constant rate, completed the 100-mile trip in 5 hours; train Y, traveling at constant rate, completed the 100-mile trip in 3 hours. How miles had X trave...

by GMATWisdom

Wed Dec 27, 2017 3:56 pm
Forum: Problem Solving
Topic: Two trains started simultaneously from opposite ends of...
Replies: 6
Views: 1325

At a certain fruit stand, the price of each apple is 40 cents and the price of each orange is 60 cents. Mary selects a total of 10 apples and oranges from the fruit stand, and the average (arithmetic mean) price of the 10 pieces of fruit is 56 cents. How many oranges must Mary put back so that the ...

by GMATWisdom

Wed Dec 27, 2017 12:26 pm
Forum: Problem Solving
Topic: apple is 40 cents and the price of each orange is 60 cents.
Replies: 5
Views: 2381

https://s10.postimg.org/e9qyrkrat/2016-01-17_2306.png In the rhombus, BC=6, AE=4, and angle DAE = 45°. AD is the diameter of the circle. If a man started at C and followed around the outer edge of this figure to D, F, A, G, E, B and back to C, approximately how far did he travel? A. 14 + 27/4*π B...

by GMATWisdom

Wed Dec 27, 2017 7:51 am
Forum: Problem Solving
Topic: In the rhombus, BC=6, AE=4, and angle DAE = 45°...
Replies: 1
Views: 579

https://s10.postimg.org/oavt0k4ad/2015-05-12_1519.png On the number line shown above, the tick marks are equally spaced. Which of the following statements about the numbers x, y, and z must be true? I. xyz < 0 II. x + z = y III. z(y - x) > 0 A. I only B. II only C. III only D. I and III only E. I, ...

by GMATWisdom

Wed Dec 27, 2017 6:40 am
Forum: Problem Solving
Topic: On the number line shown above, the tick marks are equally..
Replies: 1
Views: 1065

A telephone company needs to create a set of 3-digit area codes. The company is entitled to use only digits 2, 4 and 5, which can be repeated. If the product of the digits in the area code must be even, how many different codes can be created? A. 20 B. 22 C. 24 D. 26 E. 30 The OA is D . I'm really ...

by GMATWisdom

Tue Dec 26, 2017 4:24 pm
Forum: Problem Solving
Topic: A telephone company needs to create a set of 3-digit area...
Replies: 1
Views: 786

A Straight Line is formed using two points A(3,3) and B(6,6). Another point P(x,y) lies between A and B such that AP/BP=10. The coordinates of P are? A. (5,5) B. (61/11, 61/11) C. (63/11, 63/11) D. (36/11, 36/11) E. (58/11, 58/11) The OA is C . I don't have clear this PS question, I appreciate if a...

by GMATWisdom

Tue Dec 26, 2017 4:16 pm
Forum: Problem Solving
Topic: A Straight Line is formed using two points A(3,3) and B...
Replies: 1
Views: 629

A certain car increased its average speed by 5 miles per hour in each successive 5-minute interval after the first interval. If in the first 5-minute interval its average speed was 20 miles per hour, how many miles did the car travel in the third 5-minute interval? A) 1.0 B) 1.5 C) 2.0 D) 2.5 E) 3....

by GMATWisdom

Tue Dec 26, 2017 7:21 am
Forum: Problem Solving
Topic: A certain car increased its average speed by 5 miles...
Replies: 3
Views: 1710

elias.latour.apex wrote:Simply divide both sides of the equation by 0.2 and you have your answer.
multiply both sides by 5 and we get
1.75a=b
Hence option D.

by GMATWisdom

Tue Dec 26, 2017 6:29 am
Forum: Problem Solving
Topic: a and b are nonzero integers such that 0.35a = 0.2b . . .
Replies: 4
Views: 930