Danielle went running two days in a row. She ran 4 1/5 miles on Monday.
She ran a different distance on Tuesday.
She ran a total of 7 1/2 miles on both days.
Which equation and solution show the number of miles, x, that Danielle ran on Tuesday?

A
4 1/5 +x= 7 1/2
x=3 3/10 miles

B
4 1/5x=7 1/2
x=25/14 miles

C
4 1/5+ 7 1/2=x
x=11 7/10 miles

D
4 1/5×7 1/2=x
x= 31 1/2 miles