Gautam travels 160 kms at 32 kmph and returns at 40 kmph.

Gautam travels 160 kms at 32 kmph and returns at 40 kmph. Then his average speed is

Here, distances are equal.

∴ Average speed =		2xy		kmph.
		x + y

=		2 × 32 × 40		kmph.
		32 + 40

=		2 × 32 × 40		kmph.
		72

=		320		kmph. = 35.55 kmph.
		9