Answer:
z+7-z+9
Step-by-step explanation:
75
That means she type 450/6 minutes. Take 450 and divide it by 6.
450/6 = 75
BROWN & GREEN
Step-by-step explanation
6 : 8 : 10
divide above ratio by 2
3 : 4 : 5
green : red : brown
3 : 5
green : brown