The field has the shape of a right-angled triangle ABC, where AB = c, AX = p and XC = q. Jenny

[abusha]

The field has the shape of a right-angled triangle ABC, where AB = c, AX = p and XC = q. Jenny and Vicky went out simultaneously from point X and went around the field with equal speeds in opposite directions. It is known that they met at point B. Then

 

[lev888]

The field has the shape of a right-angled triangle ABC, where AB = c, AX = p and XC = q. Jenny and Vicky went out simultaneously from point X and went around the field with equal speeds in opposite directions. It is known that they met at point B. Then View attachment 24532

Same speed, same time, therefore, same distance. You need to write expressions for their distances and equate them. Then solve for q.