Search found 4 matches


My solution:
Original price for an apple is 0.4 dollars, during the sale, 3 apples will cost $1.
To purchase 30 apples, the original price will be 0.4*30=$12, the discounted price will be $10. So the difference will be $2

by kaylajiang

Thu Nov 01, 2018 4:44 pm
Forum: Problem Solving
Topic: At the local grocery store, apples normally cost 40 cents
Replies: 4
Views: 816

reply

I think A is the correct answer. For statement 1, we can draw the height from A to line CD, since the angle A is 120, we can get the height of the trapezoid, thus we can calculate the area. For statement 2, we only know the perimeter is 36, thus BD +CD=36-AB-AC=36-6-8=22. However, there is no way to...

by kaylajiang

Thu Nov 01, 2018 12:16 pm
Forum: Data Sufficiency
Topic: What is the area of the trapezoid shown?
Replies: 3
Views: 1094

My answer is C. Here is the reason: For statement 1: 20 cars were sold for $20,000 ->this implies that the other 30 cars were sold for $30,000 since "An auto dealer sells each car at either $20,000 or $30,000". But we don't have any information about the mark up, so this statement is insuf...

by kaylajiang

Thu Nov 01, 2018 12:03 pm
Forum: Data Sufficiency
Topic: An auto dealer sells each car at either $20,000 or $30,000.
Replies: 4
Views: 796

answer

Here is my solution:

The original price for each item is a, then the original total price for 3 items should be 3a. However, since we only need to pay for 2 items (2a), so the discount is 3a-2a/3a=1/3=33.33%

by kaylajiang

Wed Oct 24, 2018 4:46 pm
Forum: Problem Solving
Topic: The discount offer "Buy 2 and get 3" is equivalent
Replies: 3
Views: 751