A class tossed coins and recorded 161 heads and 179 tails. What is the experimental probability of tails? Round your answer to the nearest whole number.
The total number of tosses is 161 + 179 = <<161+179=340>>340.
The experimental probability of tails is 179/340 = 0.5265 = 0.53.
Rounding to the nearest whole number, the experimental probability of tails is <<53=53>>53%. Answer: \boxed{53}.