5. Lan jogged$\frac{3}{4}$ kmMai jogged $\frac{7}{10}$ kmWho jogged a longer...

Lan jogged $rac{30}{40}$ km while Mai jogged $rac{28}{40}$ km, so Lan jogged a longer distance.

Therefore, the answer to the question is that Lan jogged a longer distance than Mai.

Now we can see that Lan jogged $rac{30}{40}$ km and Mai jogged $rac{28}{40}$ km. Lan jogged a longer distance than Mai.

To convert $rac{7}{10}$ km to have a denominator of 40, we multiply both the numerator and denominator by 4, resulting in $rac{28}{40}$ km.

To convert $rac{3}{4}$ km to have a denominator of 10, we multiply both the numerator and denominator by 10, resulting in $rac{30}{40}$ km.