Three times a number increased by five times another number is 49, but twice the second number exceeds five times the first number by 1. What are the numbers?

3   and   8

Explanation:

3a + 5b = 49

2b = 5a + 1

then:

2b - 5a = 1       equation 1

-5a + 2b = 1     equation 2

then:

multiplyng by -2.5 the equation 2 and sum to the equation 1:

   3a + 5b = 49

12.5a  - 5b = -2,5

15.5a  + 0   = 46.5

15.5a = 46.5

a = 46.5/15.5

a = 3

2b = 5a + 1

2b = (5*3) + 1

2b = 15 + 1

2b = 16

b = 16/2

b = 8

Check:

3a + 5b = 49

3*3 + 5*8 = 49

9 + 40 = 49

corras is the only one that is informal but doesn't follow the suffix rule. correr is the verb. corre is the formal verb form. corra would be used as the formal is corre ended with an a.

your best bet would be corras, it's the only one that is informal but is still wrong