10-1515-2020-2525-3030-35A22.22B21.50C23.00D20.83 Step-by-Step SolutionModal class 20-25: l=20,f1=20,f0=12,f2=10,h=5. Mode =20+2×20−12−1020−12∗5=20+188∗5=20+2.22=22.22.Answer: A) 22.22