Foreign institutional investors (FIIs) were net buyers of Rs 368.90 crore on August 29, Tuesday according to data released by Sebi today.While FIIs made gross purchases of Rs 1485.60 crore, gross sales totalled Rs 1116.70 crore.Mutual funds (MFs) were net buyers of Rs 73.07 crore on Tuesday. MFs made purchases of Rs 415.04 crore and sales of Rs 341.97 crore.