Respuesta :
Answer:
15mins
Step-by-step explanation:
Ruby skated 30mins more than Susan
And she skated for 45mins
Let Susan's time b x
x + 30 = 45
x = 45 - 30
= 15mins
Answer:
15mins
Step-by-step explanation:
Ruby skated 30mins more than Susan
And she skated for 45mins
Let Susan's time b x
x + 30 = 45
x = 45 - 30
= 15mins