Step-by-step explanation:
Red ribbon = 21cm + blue ribbon
Blue ribbon = green ribbon - 48 cm
Green ribbon = 2m 35cm
converting the length to centimeter:
100cm = 1m
Green ribbon = 2(100) + 35cm = 200 + 35
Green ribbon = 235cm
Blue ribbon = 235cm - 48cm
Blue ribbon = 187cm
Red ribbon = 21cm + 187cm
can you see the workings?please resp