Melvin would have mowed 12/25 of the lawn of the when he takes his first break.
An equation is an expression that shows the relationship between two or more numbers and variables.
The total number of squares in the lawn = 100, 3/10 of the lawn = (3/10) * 100 = 30 squares
The number of squares already mowed = 18
Hence:
Fraction of the lawn Melvin have mowed when he takes his first break = (18 + 30) / 100 = 48/100 = 12/25
Melvin would have mowed 12/25 of the lawn of the when he takes his first break.
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