The scale factor JKLM to PQRS = 12/15 = 4/5
The scale factor PQRS to JKLM = 15/12 = 5/4
so
x = 10 x 5/4 = 12.5
y = 16 x 5/4 = 20
w = 25 x 4/5 = 20
Perimeter of JKLM = 25 + 15 + 12.5 + 20 = 72.5
Perimeter of PQRS = 20 +12 +10+16 = 58
Answers:
The scale Factor JKLM to PQRS = 12/15 = 4/5
The value of w is 20
The value of y is 20
The perimeter of PQRS is 58
