Aptitude Flashcards
7 cards from real Numerical Reasoning practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Aptitude flashcards as text
An investment of $5,000 earns simple interest at 6% per year. What is the total value after 3 years?
Answer: $5,900
Interest = 5000 x 0.06 x 3 = $900; total = $5,900.
A pipe can fill a tank in 6 hours and another can drain it in 9 hours. If both are open together, how many hours to fill the empty tank?
Answer: 18
Net fill rate = 1/6 minus 1/9 = 1/18 per hour; tank fills in 18 hours.
If x squared equals 144 and x is positive, what is the value of 3x minus 5?
Answer: 31
x = 12; 3(12) minus 5 = 36 minus 5 = 31.
A salesperson earns a $2,000 base salary plus 4% commission on sales. If total earnings were $3,400, what were total sales?
Answer: $35,000
Commission = $1,400; sales = 1400 / 0.04 = $35,000.
A number is increased by 30% and then decreased by 20%. What is the net percentage change?
Answer: 4% increase
Net multiplier = 1.30 x 0.80 = 1.04, which represents a 4% increase.
Train A leaves at 8:00 AM at 60 mph. Train B leaves the same station at 9:00 AM at 90 mph in the same direction. When does Train B catch Train A?
Answer: 11:00 AM
Train A has a 60-mile head start; closing speed = 30 mph; 60/30 = 2 hours after 9:00 AM = 11:00 AM.
What is the least common multiple (LCM) of 12, 18, and 24?
Answer: 72
Prime factorizations give LCM = 2 cubed x 3 squared = 72.