1/4 of 40 cups
To find out what 1/4 of 40 cups is, you need to multiply 1/4 by 40!
1/4 • 40 = 10 cups
So if watering one plant uses 10 cups of water and she uses all of the 40 cups she had, it then means that she watered 4 plants because 4 times 10 equals 40!
Another easier way to see it is that watering a plant takes 1/4 of her water and so if by the end she used 4/4 of her water, it then means that she watered 4 plants! :)
