Question

How long does it take Jack to paint 3 walls of the same size, if he paints one wall in 49 min 36 sec?

• A. 1 hour 50 minutes
• B. 56 minutes 36 seconds
• C. 2 hours 28 minutes 48 seconds
• D. 3 hours 36 minutes 15 seconds

Answer 1

The correct option is C 2 hours 28 minutes 48 seconds

Time taken to paint 1 wall = 49 minutes 36 seconds

Time taken to paint 3 such walls:


1 minute = 60 seconds
108 seconds = 60 seconds + 48 seconds
= 1 minute 48 seconds

147 minutes 108 seconds
= 147 minutes + 1 minute + 48 seconds
= 148 minutes + 48 seconds

1 hour = 60 minutes
148 minutes = 120 minutes + 28 minutes
= 2 hours 28 minutes

147 minutes 108 seconds = 2 hours 28 minutes 48 seconds

Hence, Jack takes 2 hours 28 minutes 48 seconds to paint 3 walls of the same size.