During morning walk, a man covers a distance of 3 km, 4 km, 3.5 km, 5km and 4.5 km from Monday to Friday, respectively. How much distance should he cover on two more days, so that his average per week becomes 4 km per day?

4 km
8 km
5 km
6 km

Show answer & explanation

Answer: (B) 8 km

Explanation

To average 4 km a day over 7 days he needs 28 km in total. Monday to Friday he covered 3 + 4 + 3.5 + 5 + 4.5 = 20 km, so he must cover 28 − 20 = 8 km in the remaining two days.