B. Label the extremes and means of the following.
1. 6:10= 15:25
2. 35:40= 7:8

Answer:
a : b = c : d
Solution:
1.) 6 : 10 = 15 : 25
Extremes: 6 and 25
Means: 10 and 15
2.) 35 : 40 = 7 : 8
Extremes: 35 and 8
Means: 40 and 7
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1. 6 : 10 = 15 : 25
This is PROPORTION
2. 35 : 40 = 7 : 8
This is PROPORTION
Hope it's help! ^_^