Percentage Problems and Absolute Values

The video tutorial covers various data sufficiency problems, including determining percentages, ratios, absolute values, and comparisons. The instructor demonstrates how to solve each problem using given statements and explains the reasoning behind each solution. The tutorial aims to provide a real-time problem-solving experience, helping viewers understand the thought process involved in tackling these types of questions.

What is the value of 20% of a number if 10% of it is 5?

• 10

• 15

• 20

• 25

If 40% of twice a number equals 40, what is 20% of the number?

• 20

• 15

• 10

• 5

What is the ratio of baking powder to flour if 9.9 grams of flour is in 10 grams of mix?

• 1:9

• 1:99

• 1:10

• 1:90

If 0.3 grams of baking powder is in 30 grams of mix, what is the ratio of baking powder to flour?

• 1:10

• 1:99

• 1:90

• 1:100

For which values of x is x equal to the negative absolute value of x?

• All numbers

• Negative numbers

• Zero

• Positive numbers

If x squared equals 4, what is the absolute value of x?

• 2

• 4

• 0

• 8

Is r greater than 0.27 if r is greater than 1/4?

• Always true

• Yes

• No

• Cannot be determined

If r equals 3/10, is r greater than 0.27?

• Yes

• No

• Cannot be determined

• Always false

If n is 8, can you determine the sum of n odd integers?

• Yes

• No

• Only if they are positive

• Only if they are consecutive

If the square of the number of integers is 64, what is n?

• 4

• 8

• 16

• 64