Respuesta :
Answer:
The son mowed most of the lawn
7/20 of the lawn still needs to be mowed
Explanations:Size of the lawn mowed by Miss Jones = 1/4
Size of the lawn mowed by her son = 2/5
To know who mowed the most lawn, find the LCM of the denominators
The LCM of 4and 5 = 20
Make the denominators of both fractions to be 20
Size of the lawn mowed by Miss Jones = 1/4 x 5/5 = 5/20
Size of the lawn mowed by her son = 2/5 x 4/4 = 8/20
Since 8/20 > 5/20, Miss Jone's son mowed more part of the lawn than Miss Jone
How much of the lawn still needs to be mowed:
[tex]\begin{gathered} \text{The part of the lawn that still n}eeds\text{ to be mowed = 1 -}\frac{1}{4}-\frac{2}{5}\text{ } \\ \text{The part of the lawn that still n}eds\text{ to be mowed = }\frac{7}{20} \end{gathered}[/tex]