Numerical Reasoning Flashcards

In a survey of 200 students, 45% prefer online learning. How many prefer traditional in-person learning?

Answer: 110

45% of 200 = 90 prefer online, so 200 − 90 = 110 prefer in-person.

If the price of a textbook increased from $60 to $75, what is the percentage increase?

Answer: 25%

Increase = $15; percentage = (15 ÷ 60) × 100 = 25%.

A container holds 3.5 liters. If 1.75 liters is used, what fraction of the container remains?

Answer: 1/2

1.75 liters remains out of 3.5 liters, which simplifies to 1/2.

If x/4 = 6, what is the value of x + 3?

Answer: 27

x = 6 × 4 = 24, and 24 + 3 = 27.

Monthly sales figures are: Jan=$4,000, Feb=$5,500, Mar=$3,500, Apr=$6,000. What is the average monthly sales?

Answer: $4,750

Total = $19,000; average = $19,000 ÷ 4 = $4,750.

If 5 identical items cost $37.50, what is the cost of 8 of the same items?

Answer: $60.00

Cost per item = $37.50 ÷ 5 = $7.50; 8 × $7.50 = $60.00.

A circle has a radius of 7 cm. Using π ≈ 3.14, what is its approximate circumference?

Answer: 43.96 cm

Circumference = 2πr = 2 × 3.14 × 7 = 43.96 cm.