Question

On each of three days Derrick Road 6.45 km to school 150 meters to the library and then 500 Meters back home. how many kilometers did he ride for the three days all together?

Answer 1

3*(6.45 +0.15 +0.50) = 3*(7.10)
= 21.30 . . . . km altogether

Answer 2

He rode 7.100km today