![sti192](/avatars/4459.jpg)
sti192
30.09.2019 •
Mathematics
How many quarts of pure antifreeze must be added to 20 quarts of a 45% antifreeze solution to obtain a 75% antifreeze solution?
Solved
Show answers
More tips
- C Cities and Countries Which Country has the Most Expensive Visa?...
- G Goods and services Don t Let Your Fridge Smell Bother You: How to Get Rid of Unpleasant Odors in Your Refrigerator...
- F Family and Home What does a newborn need?...
- F Food and Cooking How to Make Cottage Cheese Casserole? A Proven Recipe...
- H Health and Medicine How to Improve Eyesight: Science-based Techniques to Enhance Your Visual Acuity...
- A Auto and Moto What to expect from the new VW Golf 7?...
- F Food and Cooking Learn How to Make Ice Cream at Home - Step by Step Guide...
- F Food and Cooking Discover the most delicious spaghetti with these tips...
- F Food and Cooking Why Chicken Liver Pops and How It Can Affect Your Health?...
- F Food and Cooking How to Choose the Right Olive Oil: A Comprehensive Guide...
Answers on questions: Mathematics
- M Mathematics Find the equation of the line (in slope intercept form) passing through the point (3,−5)(3,−5) and perpendicular to the line passing through the origin with slope...
- M Mathematics Find the average rate of change of f on the interval [10, 60]. (round your answer to the nearest integer.)...
- M Mathematics An automobile has a price of $16,000 after being discounted 20%. what is the original price?...
- M Mathematics The range of a set of data is 48. of the lowest value in the data set is 2, what is the highest value...
- M Mathematics Amap has a scale of 1: 2000. if the distance between two points on this map is six inches, what is the actual distance on the earth in feet...
- M Mathematics Acoin is tossed 5 times what is the probability of getting tails in the first two tosses...
- M Mathematics In 2014, the world s population reached 7.17 billion1 and was increasing at a rate of 1.1% per year. Assume that this growth rate remains constant. (In fact, the growth...
- M Mathematics A triangle has side lengths of (2.4b+3.1)(2.4b+3.1) centimeters, (5.9b-9.7)(5.9b−9.7) centimeters, and (5.9c-5.3)(5.9c−5.3) centimeters. Which expression represents...
- M Mathematics Suppose that tuition at a state college was $3,500 per year in 1995 and has been increasing at a rate of $225 per year. Write an equation to model the cost of tuition...
- M Mathematics The formula d = 16t gives the distance d, in feet, that an object has fallen t seconds after it is dropped from a bridge. A rock was dropped from the bridge and its...
Ответ:
24 quarts
Step-by-step explanation:
45% of 20 is 0.45 * 20 = 9
So in 20 quarts, 9 is pure antifreeze
suppose we want to add x quarts and this will make it 75%. So we can write:
Now we cross multiply, do algebra, and solve for x:
Hence, 24 quarts should be added
Ответ: