Answer:
Approximately 13 times
Step-by-step explanation:
given data
amount at hand=$50
total cost for the ticket and shirt= 190+45=$235
amount earned per time he lawns= $15
let the number of time he lawns be x
and let the total amount be y
the expression for the situation is
y=mx+c
235=15x+50
solve for x
235-50=15x
185=15x
divide both side by 15
x=185/15
x=12.3
12.3 time
or 13 times