My sons math project and i need all the i can get- also he needs to show his work-

Answer=No

13 2/6 + 10 5/6 =
lets put the numbers into fraction form

13 2/6= 78/6+2/6=80/6

10 5/6=60/6+5/6=65/6

Add the values together

80/6+65/6=145/6
write the improper fraction as a mixed number
24 1/6

Since 24 1/6 is less than 25, she doesnt need to pay

Alternate way to solve

Add the whole numbers
10+13=23
add the fractions
2/6+5/6=7/6
put them together
23 7/6
simplify
24 1/6

Answer=24 1/6