In my closet I have 12 pair of pants, 9 skirts, and 15 shirts. What is the ratio of 'shirts' to 'skirts and pants'?

15:9

Step-by-step explanation:

Because you have a total of 15 shirts and a total of 9 skirts.

5:7

Step-by-step explanation:

You have to set up a ratio. You have the number of shirts (15) to skirts AND pants (so 12+9=21). This gives you both sides of your ratio 15:21. You can simplify by dividing both sides by 3 (greatest common factor) and get 5:7

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.