Answer:$205-ddd=$160
Step-by-step explanation:
It just depends on the grade level but that is a standard equation. The ddd would stand for dollars spent at the park. If you did $205-$160 you’d get $45. So she would have spent $45 at the park :)
Answer:
First you find how many pounds for 1 litre of blood. Trick is if you divide x by y, the answer you get will follow the unit of x. So if you divide 150 pounds by 4.5 litres, the answer will be 33.33 pounds per litre. So how many 33.33... is there in 250? Just divide 250 by 33.333 or (150/4.5), you'd get 7.5. That means for there's 7.5 parts of 33.333 pounds in 250 pounds. And if 33.333 pounds is equal to 1 litre of blood, you get 7.5 liter!
All you wanna do is divide-
490/3 1/2= 140
they make 140 buttons per hour
