Answer:
38 %
Step-by-step explanation:
1. Percent of lawns mowed
[tex]\text{Percent} = \dfrac{\text{Lawns mowed}}{\text{No. of lawns}} \times 100 \% = \dfrac{37}{60} \times 100 \% = 62 \%}[/tex]
2. Percent of lawns unmowed
% Unmowed = 100 % - 62 % = 38 %
Henry still needs to mow 38 % of the lawns.