# Aptitude-Chain Rule

(1) A car travels a distance of 480 km at a uniform speed. If the speed of the car were increased by 20 km/hr, it would take 2 hours less for the journey. What is the original speed of the car?

• (a) 60 km/hr
• (b) 40 km/hr
• (c) 80 km/hr
• (d) 70 km/hr

(2) If a sum of money becomes 4 times in 6 years at a certain rate of simple interest, what is the rate of interest per annum?

• (a) 12%
• (b) 16%
• (c) 10%
• (d) 8%

(3) A train travels a distance of 600 km at a uniform speed. If the speed of the train were increased by 10 km/hr, it would take 2 hours less for the journey. What is the original speed of the train?

• (a) 40 km/hr
• (b) 50 km/hr
• (c) 60 km/hr
• (d) 70 km/hr

(4) A worker can complete a job in 10 days. If he works with another worker, they can complete the same job in 6 days. How long would it take the second worker to complete the job alone?

• (a) 12 days
• (b) 15 days
• (c) 20 days
• (d) 25 days

(5) A rectangular garden is 24 meters long and 18 meters wide. If a person walks around the garden at a uniform speed of 4 meters per second, how long will it take to complete one round of the garden?

• (a) 12 seconds
• (b) 30 seconds
• (c) 36 seconds
• (d) 48 seconds

Author: user