Work Time is a topic in which quite a few interesting word problems are found. Two typists are engaged to type 720 pages. Typist A takes 11 more hours than typist B to type 720 pages. If typist B types 20% more pages per hour than typist A, in how many hours will the task be completed if both A and B work together on the task? A. 330 hours B. 66 hours C. 30 hours D. 55 … [Read more...]

## SAT Counting Methods : Numbers

Counting methods question How many 4 digit positive integers can be formed without using either '3' or '5'?a. 3584b. 5416c. 6416d. 4096e. 4904Correct Answer : Choice A. 3584Explanatory AnswerWe can count the number of such numbers if we can determine the options available for each of the four digits of the 4-digit number starting with the left most (thousands place).The left … [Read more...]

## Number Properties : Divisibility

This question tests your understanding of divisibility.Question If K is divisible by 3, 4 and 5, which of the following will also divide K? I. 3, 4 and 15 II. 12, 15 and 18 III. 5, 20 and 30 A. I only B. II only C. I and II only D. I and III only E. II and III onlyCorrect Answer : Choice D. I and III only.Explanatory AnswerIf K is divisible by 3, 4 and 5, K has to be a … [Read more...]

## SAT I Quant : Geometry : Scalene Triangles

Question How many scalene triangles with integer sides having a perimeter of 15 units exist, if one of its sides measures 3 units?A. 3B. 5C. 1D. 0E. 7Correct Answer : Choice C. Only 1 triangle.Explanatory AnswerData given a. The triangle is a scalene triangle. The measure of the 3 sides are different.b. Perimeter is 15. If the sides measure a, b and c units, then a + b + c … [Read more...]

## SAT I Quant : Arithmetic Word Problem

QuestionA ferry service offers its customers two price variants. A $30 pass for up to and including 20 one way trips and $1 per one way trip beyond the 20. Or $1.4 for each one way trip for those who are not pass holders. If x is more than 20 and is the number of one way trips that will cost a customer the same in both the variants, what is x? A. 30B. 35C. 40D. 25E. 32Correct … [Read more...]