Find the number that make the equivalant ratio 2:7

6:__

6:21

Step-by-step explanation:

2:7        6/2 = 3  

6:21       7*3 = 21

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.