Assume that she drove x miles on Saturday
She drove 65 miles less on Sunday than he did on Saturday
She drove x - 65 on Sunday
Twice the miles are driven on Sunday means
2(x - 65)
Is more than the number of miles on Saturday mean
2(x - 65) = 373 + x
Now we will solve the equation
2(x) - 2(65) = 373 + x
2x - 130 = 373 + x
Subtract x from both sides
2x - x - 130 = 373 + x - x
x - 130 = 373
Add 130 to both sides to find x
x - 130 + 130 = 373 + 130
x = 503
She drove 503 miles on Saturday
She drove 503 - 65 = 438 miles on Sunday
