Numerical Aptitude: Reasoning Flashcards

A train travels at a constant speed of 75 miles per hour. How long will it take the train to travel 375 miles?

Answer: 5 hours

To find the time it takes for the train to travel 375 miles, you can use the formula: Time = Distance / Speed. In this case, Time = 375 miles / 75 mph = 5 hours.

A clothing store is having a sale where a shirt that originally costs $40 is marked down by 25%. What is the new price of the shirt?

Answer: $30

To find the new price of the shirt, you first need to calculate the discount amount. The discount is 25% of $40, which is 0.25 * $40 = $10. Then, subtract the discount from the original price: $40 - $10 = $30.

What is the next number in the following sequence: 3, 9, 27, 81, ...?

Answer: 243

This is a geometric sequence where each number is obtained by multiplying the previous number by 3. So, the next number in the sequence is 81 * 3 = 243.

A factory produces 1,500 widgets in an 8-hour shift. If the factory operates for three 8-hour shifts per day, how many widgets does it produce in a 5-day work week?

Answer: 22,500

First, calculate the total number of widgets produced in one day: 1,500 widgets/shift * 3 shifts/day = 4,500 widgets/day. Then, multiply the daily production by the number of days in the work week: 4,500 widgets/day * 5 days/week = 22,500 widgets.

A rectangular garden has a length of 15 feet and a width of 10 feet. What is the perimeter of the garden?

Answer: 50 feet

The perimeter of a rectangle is calculated using the formula P = 2(length + width). In this case, P = 2(15 feet + 10 feet) = 2(25 feet) = 50 feet.

If 4 workers can pave a road in 10 days, how many days would it take 8 workers to pave the same road, assuming they work at the same rate?

Answer: 5 days

This is an inverse proportion problem. The total work is 4 workers * 10 days = 40 worker-days. To find the time it would take 8 workers, divide the total work by the new number of workers: 40 worker-days / 8 workers = 5 days.