If you would like to know how much longer is one of Marta's wires than one of Tia's, you can calculate this using the following steps:
Tia: 4-meter 8-centimeter = 408 centimeters
408 centimeters / 10 equal pieces = 40.8 centimeters per piece
Marta: 540 centimeters / 9 equal pieces = 60 centimeters per piece
60 - 40.8 = 19.2 centimeters
The correct result would be 19.2 centimeters longer pieces.