GMA Quantitative Reasoning 2

Question 1

A product costs $80. It is marked up by 25%, then discounted by 20%. What is the final price?

Accepted Answer

$80

Answer

After 25% markup: $80×1.25=$100. After 20% discount: $100×0.80=$80. The final price is $80.

Question 2

The ratio of boys to girls in a class is 3:2. If there are 30 students total, how many girls are there?

Accepted Answer

12

Answer

Total ratio parts: 3+2=5. Girls = (2/5)×30=12.

Question 3

If 15% of a number is 45, what is 40% of the same number?

Accepted Answer

120

Answer

First find the number: 15% = 45, so 100% = 45÷0.15 = 300. Then 40% of 300 = 120.

Question 4

A rectangle has area 48 m² and width 6 m. What is its perimeter?

Accepted Answer

28 m

Answer

Length = Area ÷ Width = 48÷6 = 8 m. Perimeter = 2×(length+width) = 2×(8+6) = 2×14 = 28 m.

Question 5

A sum of $1,200 is invested at a simple interest rate of 5% per year. How much interest is earned after 3 years?

Accepted Answer

$180

Answer

Simple interest = Principal × Rate × Time = $1,200 × 0.05 × 3 = $180.

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